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47 :
48 : // ObjexxFCL Headers
49 : #include <ObjexxFCL/Array1D.hh>
50 :
51 : // EnergyPlus Headers
52 : #include <EnergyPlus/DataGlobals.hh>
53 : #include <EnergyPlus/TARCOGCommon.hh>
54 : #include <EnergyPlus/TARCOGDeflection.hh>
55 : #include <EnergyPlus/TARCOGParams.hh>
56 :
57 : namespace EnergyPlus::TARCOGDeflection {
58 :
59 : // MODULE INFORMATION:
60 : // AUTHOR Simon Vidanovic
61 : // DATE WRITTEN October/22/2011
62 : // MODIFIED na
63 : // RE-ENGINEERED na
64 : // Revision: 7.0.02 (October 22, 2011)
65 : // - Initial setup
66 :
67 : // PURPOSE OF THIS MODULE:
68 : // A module which contains functions for deflection calculation
69 :
70 : // Using/Aliasing
71 : using namespace TARCOGParams;
72 : using namespace TARCOGCommon;
73 :
74 4036 : void PanesDeflection(DeflectionCalculation const DeflectionStandard,
75 : Real64 const W,
76 : Real64 const H,
77 : int const nlayer,
78 : Real64 const Pa,
79 : Real64 const Pini,
80 : Real64 const Tini,
81 : const Array1D<Real64> &PaneThickness,
82 : const Array1D<Real64> &NonDeflectedGapWidth,
83 : Array1D<Real64> &DeflectedGapWidthMax,
84 : Array1D<Real64> &DeflectedGapWidthMean,
85 : const Array1D<Real64> &PanelTemps,
86 : const Array1D<Real64> &YoungsMod,
87 : const Array1D<Real64> &PoissonsRat,
88 : Array1D<Real64> &LayerDeflection,
89 : int &nperr,
90 : std::string &ErrorMessage)
91 : {
92 : //***********************************************************************
93 : // PanesDeflection - calculates deflection of panes and recalculate gap
94 : // widths at maximal point of deflection
95 : //***********************************************************************
96 :
97 : // Argument array dimensioning
98 4036 : EP_SIZE_CHECK(PaneThickness, maxlay);
99 4036 : EP_SIZE_CHECK(NonDeflectedGapWidth, MaxGap);
100 4036 : EP_SIZE_CHECK(DeflectedGapWidthMax, MaxGap);
101 4036 : EP_SIZE_CHECK(DeflectedGapWidthMean, MaxGap);
102 4036 : EP_SIZE_CHECK(PanelTemps, maxlay2);
103 4036 : EP_SIZE_CHECK(YoungsMod, maxlay);
104 4036 : EP_SIZE_CHECK(PoissonsRat, maxlay);
105 4036 : EP_SIZE_CHECK(LayerDeflection, maxlay);
106 :
107 : // Localy used
108 4036 : Array1D<Real64> DCoeff(maxlay);
109 :
110 : // first calculate D coefficients since that will be necessary for any of selected standards
111 16144 : for (int i = 1; i <= nlayer; ++i) {
112 12108 : DCoeff(i) = YoungsMod(i) * pow_3(PaneThickness(i)) / (12 * (1 - pow_2(PoissonsRat(i))));
113 : }
114 4036 : if (DeflectionStandard == DeflectionCalculation::TEMPERATURE) {
115 2018 : DeflectionTemperatures(nlayer,
116 : W,
117 : H,
118 : Pa,
119 : Pini,
120 : Tini,
121 : NonDeflectedGapWidth,
122 : DeflectedGapWidthMax,
123 : DeflectedGapWidthMean,
124 : PanelTemps,
125 : DCoeff,
126 : LayerDeflection,
127 : nperr,
128 : ErrorMessage);
129 2018 : } else if (DeflectionStandard == DeflectionCalculation::GAP_WIDTHS) {
130 2018 : DeflectionWidths(nlayer, W, H, DCoeff, NonDeflectedGapWidth, DeflectedGapWidthMax, DeflectedGapWidthMean, LayerDeflection);
131 : } else { // including NO_DEFLECTION_CALCULATION
132 0 : return;
133 : }
134 4036 : }
135 :
136 2018 : void DeflectionTemperatures(int const nlayer,
137 : Real64 const W,
138 : Real64 const H,
139 : Real64 const Pa,
140 : Real64 const Pini,
141 : Real64 const Tini,
142 : const Array1D<Real64> &NonDeflectedGapWidth,
143 : Array1D<Real64> &DeflectedGapWidthMax,
144 : Array1D<Real64> &DeflectedGapWidthMean,
145 : const Array1D<Real64> &PanelTemps,
146 : Array1D<Real64> &DCoeff,
147 : Array1D<Real64> &LayerDeflection,
148 : int &nperr,
149 : std::string &ErrorMessage)
150 : {
151 : //***********************************************************************************************************
152 : // DeflectionTemperatures - calculates deflection of panes and recalculate gap
153 : // widths at maximal point of deflection based on gap pressures and temperatures
154 : //***********************************************************************************************************
155 :
156 : // Argument array dimensioning
157 2018 : EP_SIZE_CHECK(NonDeflectedGapWidth, MaxGap);
158 2018 : EP_SIZE_CHECK(DeflectedGapWidthMax, MaxGap);
159 2018 : EP_SIZE_CHECK(DeflectedGapWidthMean, MaxGap);
160 2018 : EP_SIZE_CHECK(PanelTemps, maxlay2);
161 2018 : EP_SIZE_CHECK(DCoeff, maxlay);
162 2018 : EP_SIZE_CHECK(LayerDeflection, maxlay);
163 :
164 : // Static constants
165 2018 : static Real64 const Pi_6(pow_6(Constant::Pi));
166 :
167 : // localy used
168 2018 : Array1D<Real64> DPressure(maxlay); // delta pressure at each glazing layer
169 2018 : Array1D<Real64> Vini(MaxGap);
170 2018 : Array1D<Real64> Vgap(MaxGap);
171 2018 : Array1D<Real64> Pgap(MaxGap);
172 2018 : Array1D<Real64> Tgap(MaxGap);
173 : Real64 MaxLDSum;
174 : Real64 MeanLDSum;
175 : Real64 Ratio;
176 :
177 : // calculate Vini for each gap
178 4036 : for (int i = 1; i <= nlayer - 1; ++i) {
179 2018 : Vini(i) = NonDeflectedGapWidth(i) * W * H;
180 : } // do i = 1, nlayer
181 :
182 2018 : MaxLDSum = LDSumMax(W, H);
183 2018 : MeanLDSum = LDSumMean(W, H);
184 2018 : Ratio = MeanLDSum / MaxLDSum;
185 :
186 : // calculate Vgap for each gap
187 2018 : Real64 const W_H_Ratio(W * H * Ratio);
188 4036 : for (int i = 1; i <= nlayer - 1; ++i) {
189 2018 : Vgap(i) = Vini(i) + W_H_Ratio * (LayerDeflection(i) - LayerDeflection(i + 1));
190 : } // do i = 1, nlayer
191 :
192 : // calculate Tgap for each gap
193 4036 : for (int i = 1; i <= nlayer - 1; ++i) {
194 2018 : int const j = 2 * i;
195 2018 : Tgap(i) = (PanelTemps(j) + PanelTemps(j + 1)) / 2;
196 : } // do i = 1, nlayer
197 :
198 4036 : for (int i = 1; i <= nlayer - 1; ++i) {
199 2018 : Pgap(i) = Pini * Vini(i) * Tgap(i) / (Tini * Vgap(i));
200 : } // do i = 1, nlayer
201 :
202 2018 : DPressure(1) = Pgap(1) - Pa;
203 2018 : if (nlayer > 1) {
204 2018 : DPressure(nlayer) = Pa - Pgap(nlayer - 1);
205 : }
206 :
207 2018 : for (int i = 2; i <= nlayer - 1; ++i) {
208 0 : DPressure(i) = Pgap(i) - Pgap(i - 1);
209 : } // do i = 1, nlayer
210 :
211 2018 : Real64 const deflection_fac(DeflectionRelaxation * MaxLDSum * 16);
212 6054 : for (int i = 1; i <= nlayer; ++i) {
213 4036 : LayerDeflection(i) += deflection_fac * DPressure(i) / (Pi_6 * DCoeff(i));
214 : }
215 :
216 4036 : for (int i = 1; i <= nlayer - 1; ++i) {
217 2018 : DeflectedGapWidthMax(i) = NonDeflectedGapWidth(i) + LayerDeflection(i) - LayerDeflection(i + 1);
218 2018 : if (DeflectedGapWidthMax(i) < 0.0) {
219 2018 : nperr = 2001; // glazing panes collapsed
220 2018 : ErrorMessage = "Glazing panes collapsed";
221 : }
222 : }
223 :
224 4036 : for (int i = 1; i <= nlayer - 1; ++i) {
225 2018 : DeflectedGapWidthMean(i) = NonDeflectedGapWidth(i) + Ratio * (DeflectedGapWidthMax(i) - NonDeflectedGapWidth(i));
226 : }
227 2018 : }
228 :
229 2018 : void DeflectionWidths(int const nlayer,
230 : Real64 const W,
231 : Real64 const H,
232 : Array1D<Real64> &DCoeff,
233 : const Array1D<Real64> &NonDeflectedGapWidth,
234 : const Array1D<Real64> &DeflectedGapWidthMax,
235 : Array1D<Real64> &DeflectedGapWidthMean,
236 : Array1D<Real64> &LayerDeflection)
237 : {
238 : // Argument array dimensioning
239 2018 : EP_SIZE_CHECK(DCoeff, maxlay);
240 2018 : EP_SIZE_CHECK(NonDeflectedGapWidth, MaxGap);
241 2018 : EP_SIZE_CHECK(DeflectedGapWidthMax, MaxGap);
242 2018 : EP_SIZE_CHECK(DeflectedGapWidthMean, MaxGap);
243 2018 : EP_SIZE_CHECK(LayerDeflection, maxlay);
244 :
245 2018 : Real64 nominator = 0.0;
246 8072 : for (int i = 1; i <= nlayer - 1; ++i) {
247 6054 : Real64 SumL = 0.0;
248 18162 : for (int j = i; j <= nlayer - 1; ++j) {
249 12108 : SumL += NonDeflectedGapWidth(j) - DeflectedGapWidthMax(j);
250 : }
251 6054 : nominator += SumL * DCoeff(i);
252 : }
253 :
254 2018 : Real64 denominator = 0.0;
255 10090 : for (int i = 1; i <= nlayer; ++i) {
256 8072 : denominator += DCoeff(i);
257 : }
258 :
259 2018 : LayerDeflection(nlayer) = nominator / denominator;
260 :
261 8072 : for (int i = nlayer - 1; i >= 1; --i) {
262 6054 : LayerDeflection(i) = DeflectedGapWidthMax(i) - NonDeflectedGapWidth(i) + LayerDeflection(i + 1);
263 : }
264 :
265 2018 : Real64 MaxLDSum = LDSumMax(W, H);
266 2018 : Real64 MeanLDSum = LDSumMean(W, H);
267 2018 : Real64 Ratio = MeanLDSum / MaxLDSum;
268 :
269 8072 : for (int i = 1; i <= nlayer - 1; ++i) {
270 6054 : DeflectedGapWidthMean(i) = NonDeflectedGapWidth(i) + Ratio * (DeflectedGapWidthMax(i) - NonDeflectedGapWidth(i));
271 : }
272 2018 : }
273 :
274 : } // namespace EnergyPlus::TARCOGDeflection
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