Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/tkhcalculation/TkhCalculator.java @ 9335:7dc238bd062c

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Fixed: calculation of flow depth and tkh with rounding to cm, calculator return differentiated
author mschaefer
date Mon, 30 Jul 2018 08:03:46 +0200
parents 8675912c7f48
children a0a2e68a1e11
rev   line source
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1 /** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by
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3 * Björnsen Beratende Ingenieure GmbH
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4 * Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
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5 *
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6 * This file is Free Software under the GNU AGPL (>=v3)
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7 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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8 * documentation coming with Dive4Elements River for details.
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9 */
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10 package org.dive4elements.river.artifacts.sinfo.tkhcalculation;
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11
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12 import org.apache.commons.lang.math.DoubleRange;
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13 import org.dive4elements.river.artifacts.common.GeneralResultType;
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14 import org.dive4elements.river.artifacts.common.ResultRow;
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15 import org.dive4elements.river.artifacts.model.Calculation;
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16 import org.dive4elements.river.artifacts.sinfo.common.SInfoResultType;
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17 import org.dive4elements.river.artifacts.sinfo.tkhstate.BedHeightsFinder;
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18 import org.dive4elements.river.model.River;
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19 import org.dive4elements.river.utils.Formatter;
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20
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21 /**
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22 * @author Gernot Belger
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23 */
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24 public final class TkhCalculator {
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25
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26 /**
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27 * Return type of the tkh calculation
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28 *
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29 */
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30 public enum TkhCalculateState {
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31 SUCCESS, NO_W, NO_BED_HEIGHT, NO_DISCHARGE, NO_SOILKIND, NO_D50, NO_VELOCITY, NO_TKH
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32 }
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33
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34 private static final int VALID_BED_MEASUREMENT_YEARS = 20;
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35
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36 private final BedQualityD50KmValueFinder bedMeasurementsFinder;
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37
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38 private final SoilKindKmValueFinder soilKindFinder;
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39
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40 private final BedHeightsFinder bedHeightsProvider;
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41
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42 private final WaterlevelValuesFinder waterlevelProvider;
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43
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44 private final DischargeValuesFinder dischargeProvider;
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45
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46 private final FlowVelocityModelKmValueFinder flowVelocitiesFinder;
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47
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48 public static TkhCalculator buildTkhCalculator(final boolean useTkh, final Calculation problems, final String label,
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49 final River river, final DoubleRange calcRange, final WaterlevelValuesFinder waterlevelProvider, final DischargeValuesFinder dischargeProvider,
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50 final BedHeightsFinder bedHeightsProvider) {
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51
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52 if (!useTkh)
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53 return new TkhCalculator(null, waterlevelProvider, dischargeProvider, bedHeightsProvider, null, null);
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54
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55 if (!dischargeProvider.isValid()) {
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56 problems.addProblem("sinfo_calc_flow_depth.warning.missingQ", label);
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57 return new TkhCalculator(null, waterlevelProvider, dischargeProvider, bedHeightsProvider, null, null);
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58 }
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59
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60 /* access bed quality data */
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61 final int soundingYear = bedHeightsProvider.getInfo().getYear();
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62 final BedQualityD50KmValueFinder bedMeasurementsFinder = BedQualityD50KmValueFinder.loadBedMeasurements(problems, river, calcRange, soundingYear,
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63 VALID_BED_MEASUREMENT_YEARS);
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64 if (bedMeasurementsFinder == null)
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65 return new TkhCalculator(null, waterlevelProvider, dischargeProvider, bedHeightsProvider, null, null);
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66
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67 /* access bed soil kind data */
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68 final SoilKindKmValueFinder soilKindFinder = SoilKindKmValueFinder.loadValues(problems, river, calcRange);
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69 if (soilKindFinder == null)
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70 return new TkhCalculator(null, waterlevelProvider, dischargeProvider, bedHeightsProvider, null, null);
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71
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72 final DoubleRange qRange = dischargeProvider.getRange();
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73 final FlowVelocityModelKmValueFinder flowVelocitiesFinder = FlowVelocityModelKmValueFinder.loadValues(problems, river, calcRange, qRange);
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74 if (flowVelocitiesFinder == null)
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75 return new TkhCalculator(null, waterlevelProvider, dischargeProvider, bedHeightsProvider, null, null);
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76
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77 return new TkhCalculator(bedMeasurementsFinder, waterlevelProvider, dischargeProvider, bedHeightsProvider, soilKindFinder,
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78 flowVelocitiesFinder);
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79 }
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80
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81 private TkhCalculator(final BedQualityD50KmValueFinder bedMeasurementsFinder, final WaterlevelValuesFinder waterlevelProvider,
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82 final DischargeValuesFinder dischargeProvider, final BedHeightsFinder bedHeightsProvider, final SoilKindKmValueFinder soilKindFinder,
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83 final FlowVelocityModelKmValueFinder flowVelocitiesFinder) {
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84 this.bedMeasurementsFinder = bedMeasurementsFinder;
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85 this.waterlevelProvider = waterlevelProvider;
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86 this.dischargeProvider = dischargeProvider;
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87 this.bedHeightsProvider = bedHeightsProvider;
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88 this.soilKindFinder = soilKindFinder;
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89 this.flowVelocitiesFinder = flowVelocitiesFinder;
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90 }
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91
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92 public boolean hasTkh() {
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93
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94 if (this.dischargeProvider == null || !this.dischargeProvider.isValid())
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95 return false;
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96
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97 if (this.bedMeasurementsFinder == null)
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98 return false;
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99
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100 if (this.soilKindFinder == null)
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101 return false;
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102
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103 if (this.flowVelocitiesFinder == null)
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104 return false;
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105
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106 return true;
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107 }
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108
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109 private SoilKind getSoilKind(final double km) {
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110
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111 if (this.soilKindFinder == null)
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112 return null;
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113
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114 return this.soilKindFinder.findSoilKind(km);
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115 }
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116
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117 private double getBedMeasurement(final double km) {
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118 return this.bedMeasurementsFinder.findD50(km);
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119 }
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120
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121 public TkhCalculateState calculateTkh(final double km, final ResultRow row) {
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122
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123 row.putValue(GeneralResultType.station, km);
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124
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125 final SoilKind kind = getSoilKind(km);
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126 row.putValue(SInfoResultType.soilkind, kind);
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127
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128 final double wst = this.waterlevelProvider.getWaterlevel(km);
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129 row.putValue(SInfoResultType.waterlevel, wst);
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130 if (Double.isNaN(wst))
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131 return TkhCalculateState.NO_W;
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132
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133 final double meanBedHeight = this.bedHeightsProvider.getMeanBedHeight(km);
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134 row.putValue(SInfoResultType.meanBedHeight, meanBedHeight);
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135 if (Double.isNaN(meanBedHeight))
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136 return TkhCalculateState.NO_BED_HEIGHT;
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137
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138 final double flowDepth = Formatter.roundFlowDepth(wst) - Formatter.roundFlowDepth(meanBedHeight);
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a4f1ac81f26d Work on SINFO-FlowDepthMinMax.
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139 row.putValue(SInfoResultType.flowdepth, flowDepth);
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82998242ba84 Preparing for additional outputs of SINFO-Tkh
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140
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5d5d482da3e9 Implementing SINFO - FlowDepthMinMax calculation
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141 final double discharge = this.dischargeProvider.getDischarge(km);
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142 row.putValue(SInfoResultType.discharge, discharge);
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143
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5d5d482da3e9 Implementing SINFO - FlowDepthMinMax calculation
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144 if (!this.hasTkh())
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7dc238bd062c Fixed: calculation of flow depth and tkh with rounding to cm, calculator return differentiated
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145 return TkhCalculateState.SUCCESS;
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146
b5600453bb8f SINFO Calculations: do not produce result rows if some input data has missing values.
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147 // Missing discharge or kind is only a problem if we want to calculate tkh
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148 if (Double.isNaN(discharge))
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149 return TkhCalculateState.NO_DISCHARGE;
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b5600453bb8f SINFO Calculations: do not produce result rows if some input data has missing values.
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150 if (kind == null)
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151 return TkhCalculateState.NO_SOILKIND;
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152
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153 final double d50 = getBedMeasurement(km);
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b5600453bb8f SINFO Calculations: do not produce result rows if some input data has missing values.
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154 row.putValue(SInfoResultType.d50, d50);
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155 if (Double.isNaN(d50))
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156 return TkhCalculateState.NO_D50;
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157
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45f1ad66560e Code cleanup concerning calculations: improved error handling; improved interpolation; bed heights are now always used for spatial discretisation
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158 if (!this.flowVelocitiesFinder.findKmQValues(km, discharge))
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159 return TkhCalculateState.NO_VELOCITY;
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160
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161 final double velocity = this.flowVelocitiesFinder.getFindVmainFound();
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162 row.putValue(SInfoResultType.velocity, velocity);
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163 if (Double.isNaN(velocity))
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164 return TkhCalculateState.NO_VELOCITY;
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165
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166 final double tau = this.flowVelocitiesFinder.getFindTauFound();
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167 row.putValue(SInfoResultType.tau, tau);
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168 if (Double.isNaN(tau))
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169 return TkhCalculateState.NO_VELOCITY;
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170
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171 final double tkh = calculateTkh(flowDepth, velocity, d50, tau);
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172 row.putValue(SInfoResultType.tkh, tkh);
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173 if (Double.isNaN(tkh))
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174 return TkhCalculateState.NO_TKH;
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175
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176 switch (kind) {
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177 case starr:
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178 row.putValue(SInfoResultType.tkhup, (double) Math.round(tkh));
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179 row.putValue(SInfoResultType.tkhdown, 0.0);
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180 break;
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181
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182 case mobil:
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183 default:
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184 row.putValue(SInfoResultType.tkhup, (double) Math.round(tkh / 2));
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185 row.putValue(SInfoResultType.tkhdown, (double) -(Math.round(tkh / 2)));
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186 break;
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187 }
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188
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189 final double flowDepthTkh = calculateFlowDepthTkh(tkh, kind, flowDepth);
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190 row.putValue(SInfoResultType.flowdepthtkh, flowDepthTkh);
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b5600453bb8f SINFO Calculations: do not produce result rows if some input data has missing values.
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191
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192 return TkhCalculateState.SUCCESS;
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193 }
d9dbf0b74bc2 Refaktoring of flow depth calculation, extracting tkh part. First implementation of tkh calculation.
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194
d9dbf0b74bc2 Refaktoring of flow depth calculation, extracting tkh part. First implementation of tkh calculation.
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195 /**
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196 * Calculates a transport body height
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197 *
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198 * @param h
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199 * flow depth in m
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200 * @param vm
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201 * flow velocity in m
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202 * @param d50
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203 * grain diameter D50 in m (!)
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204 * @param tau
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205 * shear stress in N/m^2
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29442c03c6e3 d50 aggregation by median instead of arithmetic mean,
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206 * @return transport body height in cm (!), never negative
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d9dbf0b74bc2 Refaktoring of flow depth calculation, extracting tkh part. First implementation of tkh calculation.
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207 */
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208 private double calculateTkh(final double h, final double vm, final double d50, final double tau) {
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209 final double PHYS_G = 9.81;
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210 final double PHYS_SPECGRAV_S = 2.6;
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211 final double PHYS_VELOCCOEFF_N = 6;
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212 final double PHYS_FORMCOEFF_ALPHA = 0.7;
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213 final double PHYS_VISCOSITY_NUE = 1.3e-6;
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214 final double PHYS_GRAIN_DENSITY_RHOS = 2603;
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215 final double PHYS_WATER_DENSITY_RHO = 999.97;
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216
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217 final double froude = vm / Math.sqrt(PHYS_G * h);
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218 final double partReynolds = Math.sqrt((PHYS_SPECGRAV_S - 1) * PHYS_G * d50) / PHYS_VISCOSITY_NUE * d50;
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8675912c7f48 Fixed tkh calculation (sign of an exponent of the critical shields term)
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diff changeset
219 final double critShields = 0.22 * Math.pow(partReynolds, -0.6) + 0.06 * Math.pow(10, -7.7 * Math.pow(partReynolds, -0.6));
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220 final double critTau = critShields * (PHYS_GRAIN_DENSITY_RHOS - PHYS_WATER_DENSITY_RHO) * PHYS_G * d50;
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29442c03c6e3 d50 aggregation by median instead of arithmetic mean,
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diff changeset
221 final double tkh = 100 * h * (1 - Math.pow(froude, 2)) / (2 * PHYS_VELOCCOEFF_N * PHYS_FORMCOEFF_ALPHA) * (1 - critTau / tau);
29442c03c6e3 d50 aggregation by median instead of arithmetic mean,
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222 // Some regular input values may give a negative calculation result; that is unwanted
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diff changeset
223 if (tkh < 0.0)
29442c03c6e3 d50 aggregation by median instead of arithmetic mean,
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diff changeset
224 return 0.0;
8938
9c02733a1b3c Work on Sinfo-tkh - exports; using same logic for wst-description as winfo
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diff changeset
225
9c02733a1b3c Work on Sinfo-tkh - exports; using same logic for wst-description as winfo
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226 return tkh;
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227 }
8940
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228
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7dc238bd062c Fixed: calculation of flow depth and tkh with rounding to cm, calculator return differentiated
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diff changeset
229 private double calculateFlowDepthTkh(final double tkhValue, final SoilKind tkhKind, final double flowDepth) {
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230
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diff changeset
231 switch (tkhKind) {
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diff changeset
232 case starr:
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7dc238bd062c Fixed: calculation of flow depth and tkh with rounding to cm, calculator return differentiated
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diff changeset
233 return flowDepth - Math.round(tkhValue) / 100.0;
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234
82998242ba84 Preparing for additional outputs of SINFO-Tkh
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diff changeset
235 case mobil:
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diff changeset
236 default:
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7dc238bd062c Fixed: calculation of flow depth and tkh with rounding to cm, calculator return differentiated
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diff changeset
237 return flowDepth - Math.round(tkhValue / 2) / 100.0;
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82998242ba84 Preparing for additional outputs of SINFO-Tkh
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238 }
82998242ba84 Preparing for additional outputs of SINFO-Tkh
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239 }
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240 }
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