In the case where a fluid is in contact with a solid wall within the computational domain, the boundary layer and wall heat transfer coefficient will normally be calculated by the software from first principles.
The only time the user will specify the heat transfer coefficient on a wall surface is usually for an internal flow model where the coefficient can be specified on the external walls (which are not in contact with any fluid). It’s also technically possible to specify a Real Wall boundary condition on any internal wall (even those already contacting a fluid), but this doesn’t make much sense unless you’re simulating a conduction-only solids-only model without any fluid (possible, but unusual).
FloEFD是專業(yè)的熱分析模擬軟件劝术，因此相比于ANSYS攀圈，它在熱仿真方面還是有其獨(dú)到之處的传蹈。就拿這個(gè)自然對(duì)流系數(shù)來(lái)講兴猩，在ANSYS里面你要自己定義鞭衩，根據(jù)你的經(jīng)驗(yàn)或者通過(guò)理論公式計(jì)算敲茄。而在FloEFD里面充包，在設(shè)置好邊界條件后就不需要定義自然對(duì)流系數(shù)了副签，軟件會(huì)根據(jù)已給條件自動(dòng)計(jì)算，在結(jié)果里面可以查看系數(shù)的大小基矮。
