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- Thread starter xian_kgx
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FredGarvin

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There are 3 main assumptions in the derivation of the Bernoulli equation. What are they?

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as long as there is a flow then there is a difference in energy-which cuased the flow to occur-

there is the primary losses(friction)and the secondry(valve,bend-)which u don have here--

if u could show ur pipe system-it would be more clear for us-

wish i could help

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Good hints. Check my answers and let me know if I got all of them!

FredGarvin said:There are 3 main assumptions in the derivation of the Bernoulli equation. What are they?

1) Constant mass flow rate (no surges).

2) Frictionless (no heat transfer).

3) Irrotational (translational velocity only).

How'd I do?

Rainman

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FredGarvin

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- Incompressible

- Inviscous

- Steady State

Since it also is applied along the streamline, so the irrotational part holds too.

A+ for Rainman

As for the main post, energy will not be conserved because of the losses due to friction. Also, you do not state the fluid involved. If it is a liquid, then the incompressibility assumption is pretty much valid. If it is a gas, you need to be concerned with it.

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