Thank you. I was wondering how you calculate the losses created when the pipe is reduced in diameter. I know both diameters have their own separate head loss, but surely there are losses created in the connection point itself, especially if it is not a gradual transition. I assume there would be some sort of turbulent flow created by an immediate transition from large diameter to small diameter. I cannot seem to find a K (minor loss coefficient) value anywhere for this.
You're welcome. You can use the equation given in 1:55 min and then collect the data as shown table @ 12.30 min, once you have experimental ∆h and v^2/2g, you can find K.
@@MohammadShafinulHaque I appreciate your response. I am working on project where I do not have access to the pipes to do experimental testing. Do you have any recommendations for finding the minor loss K values for instant contractions in pipes just from their diameter values?
@@jacksonbradshaw855 one way to do that if you have the cross sectional area or dia at vena contracta, such as AcVc = A2V2. Since you do not have any access to the pipe, one option is to assume K=0.5.
Thank you for explaining the lesson
You're welcome
hi, I was wondering if you bought the manometers/equipment or you made it? I want to make something similar thank you for the information
You can purchase these from armfield F1-22 and F1-10.
Thank you. I was wondering how you calculate the losses created when the pipe is reduced in diameter. I know both diameters have their own separate head loss, but surely there are losses created in the connection point itself, especially if it is not a gradual transition. I assume there would be some sort of turbulent flow created by an immediate transition from large diameter to small diameter. I cannot seem to find a K (minor loss coefficient) value anywhere for this.
You're welcome. You can use the equation given in 1:55 min and then collect the data as shown table @ 12.30 min, once you have experimental ∆h and v^2/2g, you can find K.
@@MohammadShafinulHaque I appreciate your response. I am working on project where I do not have access to the pipes to do experimental testing. Do you have any recommendations for finding the minor loss K values for instant contractions in pipes just from their diameter values?
@@jacksonbradshaw855 one way to do that if you have the cross sectional area or dia at vena contracta, such as AcVc = A2V2. Since you do not have any access to the pipe, one option is to assume K=0.5.
@@MohammadShafinulHaque Sounds good, thank you for all your help.
@@jacksonbradshaw855 you're welcome
Is the value of k for a fitting constant?
At different flow rates, I got different
values of k for the same fitting.