Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/tkhcalculation/TkhCalculator.java @ 9375:a0a2e68a1e11
Fixed: cm rounding in S-Info flow depth/tkh and U-Info salix via BigDecimal, half_even mode
author | mschaefer |
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date | Fri, 03 Aug 2018 17:00:45 +0200 |
parents | 7dc238bd062c |
children | 787fc085459b |
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; |
8997 | 13 import org.dive4elements.river.artifacts.common.GeneralResultType; |
14 import org.dive4elements.river.artifacts.common.ResultRow; | |
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15 import org.dive4elements.river.artifacts.model.Calculation; |
8948 | 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) { |
8948 | 122 |
8997 | 123 row.putValue(GeneralResultType.station, km); |
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124 |
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125 final SoilKind kind = getSoilKind(km); |
8948 | 126 row.putValue(SInfoResultType.soilkind, kind); |
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127 |
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128 final double wst = this.waterlevelProvider.getWaterlevel(km); |
8948 | 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); |
8948 | 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).subtract(Formatter.roundFlowDepth(meanBedHeight)).doubleValue(); |
8948 | 139 row.putValue(SInfoResultType.flowdepth, flowDepth); |
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140 |
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141 final double discharge = this.dischargeProvider.getDischarge(km); |
8948 | 142 row.putValue(SInfoResultType.discharge, discharge); |
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143 |
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144 if (!this.hasTkh()) |
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145 return TkhCalculateState.SUCCESS; |
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146 |
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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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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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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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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(); |
8948 | 162 row.putValue(SInfoResultType.velocity, velocity); |
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163 if (Double.isNaN(velocity)) |
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164 return TkhCalculateState.NO_VELOCITY; |
8948 | 165 |
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166 final double tau = this.flowVelocitiesFinder.getFindTauFound(); |
8948 | 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); |
8948 | 172 row.putValue(SInfoResultType.tkh, tkh); |
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173 if (Double.isNaN(tkh)) |
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174 return TkhCalculateState.NO_TKH; |
8948 | 175 |
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176 switch (kind) { |
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177 case starr: |
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178 row.putValue(SInfoResultType.tkhup, Math.rint(tkh)); |
8948 | 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, Math.rint(tkh / 2)); |
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185 row.putValue(SInfoResultType.tkhdown, -(Math.rint(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); |
8948 | 190 row.putValue(SInfoResultType.flowdepthtkh, flowDepthTkh); |
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191 |
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192 return TkhCalculateState.SUCCESS; |
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193 } |
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194 |
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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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206 * @return transport body height in cm (!), never negative |
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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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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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221 final double tkh = 100 * h * (1 - Math.pow(froude, 2)) / (2 * PHYS_VELOCCOEFF_N * PHYS_FORMCOEFF_ALPHA) * (1 - critTau / tau); |
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222 // Some regular input values may give a negative calculation result; that is unwanted |
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223 if (tkh < 0.0) |
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224 return 0.0; |
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225 |
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226 return tkh; |
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227 } |
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228 |
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229 private double calculateFlowDepthTkh(final double tkhValue, final SoilKind tkhKind, final double flowDepth) { |
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230 |
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231 switch (tkhKind) { |
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232 case starr: |
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233 return flowDepth - Math.rint(tkhValue) / 100.0; |
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234 |
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235 case mobil: |
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236 default: |
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237 return flowDepth - Math.rint(tkhValue / 2) / 100.0; |
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238 } |
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239 } |
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240 } |