《数值传热学》研究生课程教学资源（课件讲稿）Chapter 6 Primitive Variable Methods for Elliptic Flow and Heat Transfer（1/3，6.1-6.3）

热流科学与工程西步文通大堂E教育部重点实验室True solutionSum of two profilesPressure waveai-2i-1ii+1i+2CFD-NHT-EHTG11/37CENTER

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热流科学与工程西步文通大堂E教育部重点实验室,axr-2i-1ii+1i+2True solutionSum of two profilesThis wave pressure field can satisfy the momentumequations.Becauseonlypressuredifferenceover 2-,is included in the discretized equationsFor the true and false pressure profiles 2- differenceisthe sameCFD-NHT-EHTG12/37CENTER

12/37 This wave pressure field can satisfy the momentum equations . Because only pressure difference over , is included in the discretized equations. For the true and false pressure profiles difference is the same. 2  2 

热流科学与工程西步文源大堂G教育部重点实验室180180[100[100180If on an original correct1015101510pressure field thischeckboard pressure801008010080field is added. Then the1015101510pressuredifferenceover2-delta ofthetruefield is808010080100the same as that of thesuperimposed(被叠加的)1510151010pressure field!80801008010022-Dcheckerboardpressurefield（二维波形压力场）ΦCFD-NHT-EHT13/37CENTER

13/37 2-D checkerboard pressure field（二维波形压力场）         If on an original correct pressure field this checkboard pressure field is added. Then the pressure difference over 2-delta of the true field is the same as that of the superimposed (被叠加的) pressure field！