for your first question: if you want to have a face to be included into simulations goals, you can insets a dummy component and then exclude it from the analysis. About the 2nd question: please upload your simulation here if possible.
Yes, dummy geometry is the way to go here. You can turn off CAD geometry from being considered in your CFD model by using the "component control" tool.
Hello, thanks for your comments, i already made that modification (dummy geometry), attached you can find 3 pages with the results.
The first page (R. Mott) includes the traditional method to calculate the delta p through the duct this gives a value of 0.114 inWg, this method considers that there are no changes in fluid velocity between points 1 and 2, this method also does not consider the losses caused by the entrance of the fluid to the duct.
The second page (ACGIH) includes the ACGIH method, this method considers lost by friction in the duct (0.157 inWg) and losses originated by the flow entering the duct (1.693 inWg), the total Static Pressure is 1.850 inWg
The tird page includes the flow simulation results
A.- forced draft flow: Delta SP = 0.166 inWg
B.- induced draft flow Delta SP = 0.139 inWg
C.- Study to take account of the duct entry loss Delta SP = 0.094 inWg
If i follow the ACGIH method to calculate the Total pressure = SP + VP i can solve the ecuation and obtain the Factor for the elbow i want to analyse, currently i only have the calcs and simulation for the single duct however as you can see there are a big difference in SP if i use the ACGIH method wich will affect the final TP, also i dont understand why im getting a lower value when i run the case C scenario
what do you think about all this guys???