Negative index correction

Found a problem with one of the loops in the vertical algorithm, resulted from bad job moving stuff around. Xcode was very forgiving, Ubuntu not so much. This should make them both happy.
NREL · Aug 9, 2023 · a445934 · a445934 · nrel-bot-2c · Aug 9, 2023
1 parent 1a7b1b2
commit a445934
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/EnergyPlus/EarthTube.cc b/src/EnergyPlus/EarthTube.cc
@@ -1021,7 +1021,8 @@ void EarthTubeData::calcVerticalEarthTube(EnergyPlusData &state, Real64 airFlowT
             this->cPrime[nodeNum] = this->cPrime0[nodeNum];
         }
     } else { // there is positive flow so calculate cPrime
-        for (int nodeNum = 0; nodeNum <= nodeLast; ++nodeNum) {
+        this->cPrime[0] = this->cCoeff[0] / this->bCoeff[0];
+        for (int nodeNum = 1; nodeNum <= nodeLast; ++nodeNum) {
             Real64 addTerm = 0.0;
             if (nodeNum == nodeET) addTerm = airFlowTerm;
             this->cPrime[nodeNum] = this->cCoeff[nodeNum] / (this->bCoeff[nodeNum] + addTerm - this->aCoeff[nodeNum] * this->cPrime[nodeNum - 1]);