Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/tkhcalculation/TkhCalculator.java @ 8940:82998242ba84
Preparing for additional outputs of SINFO-Tkh
author | gernotbelger |
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date | Tue, 06 Mar 2018 18:51:18 +0100 |
parents | 9c02733a1b3c |
children | 5d5d482da3e9 |
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.apache.commons.math.ArgumentOutsideDomainException; |
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14 import org.apache.commons.math.FunctionEvaluationException; |
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15 import org.dive4elements.artifacts.CallContext; |
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16 import org.dive4elements.river.artifacts.model.Calculation; |
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17 import org.dive4elements.river.artifacts.resources.Resources; |
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18 import org.dive4elements.river.artifacts.sinfo.tkhstate.BedHeightsFinder; |
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19 import org.dive4elements.river.model.River; |
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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 private static final int VALID_BED_MEASUREMENT_YEARS = 20; |
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27 |
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28 private final Calculation problems; |
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29 |
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30 private final String problemLabel; |
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31 |
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32 private final CallContext context; |
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33 |
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34 private final BedQualityD50KmValueFinder bedMeasurementsFinder; |
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35 |
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36 private final SoilKindKmValueFinder soilKindFinder; |
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37 |
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38 private final BedHeightsFinder bedHeightsProvider; |
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39 |
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40 private final DischargeValuesFinder dischargeProvider; |
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41 |
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42 private final FlowVelocityModelKmValueFinder flowVelocitiesFinder; |
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43 |
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44 public static TkhCalculator buildTkhCalculator(final boolean useTkh, final CallContext context, final Calculation problems, final String label, |
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45 final River river, final DoubleRange calcRange, final DischargeValuesFinder dischargeProvider, final BedHeightsFinder bedHeightsProvider) { |
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46 |
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47 if (!useTkh) |
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48 return null; |
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49 |
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50 if (!dischargeProvider.isValid()) { |
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51 final String message = Resources.getMsg(context.getMeta(), "sinfo_calc_flow_depth.warning.missingQ", null, label); |
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52 problems.addProblem(message); |
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53 return null; |
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54 } |
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55 |
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56 final Integer soundingYear = bedHeightsProvider.getInfo().getYear(); |
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57 final BedQualityD50KmValueFinder bedMeasurementsFinder = BedQualityD50KmValueFinder.loadBedMeasurements(river, calcRange, soundingYear, |
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58 VALID_BED_MEASUREMENT_YEARS); |
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59 |
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60 if (bedMeasurementsFinder == null) { |
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61 final String message = Resources.getMsg(context.getMeta(), "sinfo_calc_flow_depth.warning.missingD50", null, label); |
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62 problems.addProblem(message); |
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63 return null; |
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64 } |
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65 |
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66 // FIXME: wie wird ggf. interpoliert? prüfung ob werte vorhanden? |
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67 final SoilKindKmValueFinder soilKindFinder = SoilKindKmValueFinder.loadValues(river, calcRange); |
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68 if (soilKindFinder == null) { |
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69 final String message = Resources.getMsg(context.getMeta(), "sinfo_calc_flow_depth.warning.missingSoilKind", null, label); |
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70 problems.addProblem(message); |
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71 return null; |
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72 } |
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73 |
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74 final DoubleRange qRange = dischargeProvider.getRange(); |
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75 final FlowVelocityModelKmValueFinder flowVelocitiesFinder = FlowVelocityModelKmValueFinder.loadValues(river, calcRange, qRange); |
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76 if (flowVelocitiesFinder == null) { |
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77 final String message = Resources.getMsg(context.getMeta(), "sinfo_calc_flow_depth.warning.missingVelocity", null, label); |
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78 problems.addProblem(message); |
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79 return null; |
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80 } |
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81 |
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82 return new TkhCalculator(problems, label, context, bedMeasurementsFinder, dischargeProvider, bedHeightsProvider, soilKindFinder, flowVelocitiesFinder); |
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83 } |
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84 |
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85 private TkhCalculator(final Calculation problems, final String problemLabel, final CallContext context, |
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86 final BedQualityD50KmValueFinder bedMeasurementsFinder, final DischargeValuesFinder dischargeProvider, final BedHeightsFinder bedHeightsProvider, |
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87 final SoilKindKmValueFinder soilKindFinder, |
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88 final FlowVelocityModelKmValueFinder flowVelocitiesFinder) { |
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89 this.problems = problems; |
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90 this.problemLabel = problemLabel; |
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91 this.context = context; |
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92 this.bedMeasurementsFinder = bedMeasurementsFinder; |
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93 this.dischargeProvider = dischargeProvider; |
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94 this.bedHeightsProvider = bedHeightsProvider; |
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95 this.soilKindFinder = soilKindFinder; |
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96 this.flowVelocitiesFinder = flowVelocitiesFinder; |
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97 } |
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98 |
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99 private double getDischarge(final double km) { |
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100 |
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101 try { |
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102 return this.dischargeProvider.getDischarge(km); |
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103 } |
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104 catch (final FunctionEvaluationException e) { |
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105 // TODO: exceptions nicht komplett schlucken? evtl. mit log.debug(e) ausgeben |
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106 return Double.NaN; |
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107 } |
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108 } |
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109 |
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110 private SoilKind getSoilKind(final double km) { |
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111 |
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112 try { |
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113 return this.soilKindFinder.findSoilKind(km); |
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114 } |
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115 catch (final ArgumentOutsideDomainException e) { |
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116 // FIXME: cumulate problems to one message? |
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117 final String message = Resources.getMsg(this.context.getMeta(), "sinfo_calc_flow_depth.warning.missingSoilKind", null, this.problemLabel); |
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118 this.problems.addProblem(km, message); |
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119 return null; |
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120 } |
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121 } |
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122 |
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123 private double getBedMeasurement(final double km) { |
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124 |
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125 try { |
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126 return this.bedMeasurementsFinder.findD50(km); |
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127 } |
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128 catch (final Exception e) { |
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129 // FIXME: cumulate problems to one message? |
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130 final String message = Resources.getMsg(this.context.getMeta(), "sinfo_calc_flow_depth.warning.missingD50", null, this.problemLabel); |
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131 this.problems.addProblem(km, message); |
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132 |
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133 return Double.NaN; |
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134 } |
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135 } |
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136 |
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137 public Tkh getTkh(final double km, final double wst) { |
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138 |
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139 final SoilKind kind = getSoilKind(km); |
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140 |
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141 final double meanBedHeight = this.bedHeightsProvider.getMeanBedHeight(km); |
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142 |
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143 final double flowDepth = wst - meanBedHeight; |
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144 |
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145 final double discharge = getDischarge(km); |
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146 if (Double.isNaN(discharge)) { |
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147 |
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148 // final String message = Resources.getMsg(this.context.getMeta(), "sinfo_calc_flow_depth.warning.missingQ", null, |
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149 // this.problemLabel); |
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150 // this.problems.addProblem(km, message); |
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151 |
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152 // TODO: nochmal gemeinsam überlegen welche probleme wir loggen, an dieser stelle müsste man ggf. die station |
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153 // mitausgeben |
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154 |
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155 return new Tkh(km, wst, meanBedHeight, flowDepth, Double.NaN, kind); |
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156 } |
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157 |
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158 final double d50 = getBedMeasurement(km); |
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159 if (Double.isNaN(d50)) |
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160 return new Tkh(km, wst, meanBedHeight, flowDepth, discharge, kind); |
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161 |
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162 if (!this.flowVelocitiesFinder.findKmQValues(km, discharge)) { |
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163 // TODO: ggf. station in Fehlermeldung? |
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164 final String message = Resources.getMsg(this.context.getMeta(), "sinfo_calc_flow_depth.warning.missingVelocity", null, this.problemLabel); |
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165 this.problems.addProblem(km, message); |
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166 // FIXME: cumulate problems to one message? |
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167 return new Tkh(km, wst, meanBedHeight, flowDepth, discharge, kind); |
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168 } |
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169 |
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170 final double velocity = this.flowVelocitiesFinder.getFindVmainFound(); |
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171 final double tau = this.flowVelocitiesFinder.getFindTauFound(); |
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172 |
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173 final double tkh = calculateTkh(wst - meanBedHeight, velocity, d50, tau); |
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174 double tkhUp; |
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175 double tkhDown; |
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176 switch (kind) { |
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177 case starr: |
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178 tkhUp = tkh; |
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179 tkhDown = 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 tkhUp = tkh / 2; |
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185 tkhDown = -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(tkhUp, kind, wst, meanBedHeight); |
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190 |
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191 return new Tkh(km, wst, meanBedHeight, flowDepth, flowDepthTkh, discharge, kind, tkh, tkhUp, tkhDown, velocity, d50, tau); |
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192 } |
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193 |
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194 /** |
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195 * Calculates a transport body height |
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196 * |
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197 * @param h |
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198 * flow depth in m |
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199 * @param vm |
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200 * flow velocity in m |
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201 * @param d50 |
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202 * grain diameter D50 in m (!) |
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203 * @param tau |
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204 * shear stress in N/m^2 |
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205 * @return transport body height in cm (!), never negative |
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206 */ |
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207 private double calculateTkh(final double h, final double vm, final double d50, final double tau) { |
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208 final double PHYS_G = 9.81; |
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209 final double PHYS_SPECGRAV_S = 2.6; |
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210 final double PHYS_VELOCCOEFF_N = 6; |
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211 final double PHYS_FORMCOEFF_ALPHA = 0.7; |
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212 final double PHYS_VISCOSITY_NUE = 1.3e-6; |
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213 final double PHYS_GRAIN_DENSITY_RHOS = 2603; |
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214 final double PHYS_WATER_DENSITY_RHO = 999.97; |
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215 |
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216 final double froude = vm / Math.sqrt(PHYS_G * h); |
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217 final double partReynolds = Math.sqrt((PHYS_SPECGRAV_S - 1) * PHYS_G * d50) / PHYS_VISCOSITY_NUE * d50; |
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218 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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219 final double critTau = critShields * (PHYS_GRAIN_DENSITY_RHOS - PHYS_WATER_DENSITY_RHO) * PHYS_G * d50; |
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220 final double tkh = 100 * h * (1 - Math.pow(froude, 2)) / (2 * PHYS_VELOCCOEFF_N * PHYS_FORMCOEFF_ALPHA) * (1 - critTau / tau); |
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221 // Some regular input values may give a negative calculation result; that is unwanted |
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222 if (tkh < 0.0) |
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223 return 0.0; |
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224 |
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225 return tkh; |
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226 } |
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227 |
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228 private double calculateFlowDepthTkh(final double tkhValue, final SoilKind tkhKind, final double wst, final double meanBedHeight) { |
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229 |
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230 if (Double.isNaN(tkhValue) || tkhKind == null) |
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231 return Double.NaN; |
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232 |
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233 switch (tkhKind) { |
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234 case starr: |
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235 return wst - (meanBedHeight + tkhValue / 100); |
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236 |
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237 case mobil: |
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238 default: |
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239 return wst - (meanBedHeight + tkhValue / 200); |
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240 } |
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241 } |
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242 } |