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It is possible, but you would need some additional bits of information. The pressure difference down a pipe is due to resistances in the pipe. These come in the form of minor losses and friction losses. Minor losses are due to junctions and obstructions to the flow. Friction losses are due...

How much do junction loss constants in square pipes differ from loss constants for circular pipes? For example, a circular cross section pipe with a 90 degree elbow may have a loss coefficient of 0.2. How much would this value differ from the loss coefficient for a 90 degree elbow in square...

I have used one setup in the past but cannot remember the details. Anyhow, I'll see what I can remember... The viscometer is basically a tank and a long, vertical capillary tube which is connected to the bottom of the tank. Due to the small diameter of the capilliary tube, the substance will...

Branch flow sounds the more likely solution as flow would almost pass the branch before going down it (as in branch flow). Thank you both for your advice! James

Thank you all for your thoughts and suggestions! Arunb; I don't think adding all the losses is the correct method. True it would give a high value for the loss, but surely too high? I have tried drawing streamline diagrams to help picture in my mind what the flow is doing and it seems that...

Thanks for the reply. The junction in question is part of an existing design for a ventilation system for animal cages. I have been asked to look at ways of improving the system in general so that it is more efficient. I hope that by finding the head loss in the existing system I can show how...

I have a pipe which is closed at one end and has a branch coming off it near the closed end. Can I treat this as a simple 90degree bend or would the 'dead end' cause noticable resistance to the flow? Would there be resistance coefficients for this case in ASHRAE Fundamental publications? James.

I have a similar query - I have flow through a 1.5&quot; line and branch of 1&quot; but to make matters more complicated, there is a 0.8&quot; orifice at the beginning of the branch. | | < pipe | | | |___________ |...