ANSYS Fluent Tutorial | Laminar Pipe Flow | Pressure drop in a pipe

A pipe flow problem is solved and solution is validated. In this video, ANSYS R2022 is used to simulate laminar pipe flow. pressure drop
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[@shvix_akb8531]

Hello sir How to create a plot for pressure drop vs reynolds number?

[@ammarlaichi8474]

how to create a wavy circular pipe using sinusoidal equations when this equation gives a two combined shape of wavy?

[@drumairmunir]

Elaborate your questions

[@DeepakYadav-sd8gc]

Hello Sir, How to find Nusselt No value that is 4.36 for constant Heat flux in Ansys fluent please

[@drumairmunir]

I will upload a separate video for this

[@DeepakYadav-sd8gc]

@@drumairmunir can you share your mail id I have some doubts , I want to corelate analytical things to numerical

[@drumairmunir]

@@DeepakYadav-sd8gc umair.munir1atgmail.com

[@bsnrlyz]

Hi Sir, Im working on a turbulent flow in rought pipes using fluent to find pressure drop and then pressure gradient. Bu my results are not in a good agreement with the experimental results. I do exactly you do in this video and add k-epsilon model and roughness but it does not work. What do you recommend me ?

[@drumairmunir]

[phone]. Share details

[@bsnrlyz]

@@drumairmunir fluid= Water V(m/s)= 1,773618152 D(mm)= 40 Epsilon/D= 0,059428571 mm Epsilon= 0,00149 T=20C Exp= 1142 Pa/m I used 0,0027 element size and tetrahedons method (I used this method in cfx and it was ok), I set the inlet, outlet and wall and entered the inputs, specification method is intensity and hydraulic diameter, 5 and 0.04m respectively. operaion conditions>gravity>y=-9.81 used k-epsilon w/standard wall function. after 1000 iterations when I open the post-processing there is no fluid domain 1 section. Then I select plane and there I select pressure and pressure is 739 pa. Then I go back to solution part and click on reports >surface integrals> facet average>pressure>total pressure> select inlet in surfaces and then compute. I get 102051.8 and then I do the calculation and get 102051.8-101325=726.8 pa. is what i did wrong?

[@ammarlaichi8474]

deltaP=Pin-Pout, if Pout=GAUGE PRESSURE=0, SO, DELTA P=Pin, also delta P=f*(L/Dh)*RO*(Vave**2/2), f is friction factor=f(roughness, Re)@@bsnrlyz

[@bsnrlyz]

my outlet boundary condition was selected as outflow and thats what I want but I couldn't find an option to change gauge pressure or etc. Also I want to find y+ and shear stress values on a section but I don't know how to do it. Do you know how? @@ammarlaichi8474 @drumairmunir

[@cajamarcawarrior]

@@bsnrlyz What's the pipe length? * dP = P_total_inlet - P_total_outlet * Did you consider "developing flow at the inlet"? The empirical equations do not consider developing flow. They assume the flow is already developed instead. If you apply constant velocity at the inlet, the flow will develop first. During this phase, pressure drop characteristics will be different than what the empirical equation assumes.

[@محمدحسينراضي-ظ3ص]

Do you have account on Researchgate .I interested

[@drumairmunir]

Yes you may search me there by my name