March 18, 2021 at 3:47 pmFERO86Subscriber
Recently i carried out the simulation of Rayleigh-Benard convection inside a Rectangle (Aspect ratio 2:1). For comparing the results with one of the paper. The simulated results plot of Nusselt number vs X (distance) for Ra (rayleigh number 10^4) with boundary conditions: top plate = 325 k, Bottom plate= 295 k, Side walls= adiabatic, fluid: water, Pr= 6.57. are as followMarch 18, 2021 at 3:51 pmRobAnsys EmployeeRead the Nusselt Number definition in the User's Guide, then look at the values it's using. nMarch 18, 2021 at 4:14 pmYasserSelimaSubscriberWhat is the reference length you are using? Compare it to the characteristic length used in the papernMarch 18, 2021 at 4:35 pmFERO86Subscriber
What is the reference length you are using? Compare it to the characteristic length used in the paperhttps://forum.ansys.com/discussion/comment/111466#Comment_111466Characteristic length which i have used is the height (H) of the rectangle same which is used in paper.nMarch 18, 2021 at 7:06 pmDrAmineAnsys EmployeeAlso check the reference temperature on which the htc is based and compare to the formulation used in the pape.I remember in the past in similar exercise I just exported the heat flux at the wall along the a line or whatever and made post processing to get Nu outside of the code.nMarch 18, 2021 at 7:06 pmDrAmineAnsys EmployeeGood luck.nMarch 22, 2021 at 6:33 amFERO86SubscriberMarch 22, 2021 at 10:28 amDrAmineAnsys EmployeeWelcome!nViewing 7 reply threads
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