- #1

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i was provided by the radii from 0 to 5 cm and a parabolic profile is also given .. in numeric form i was asked to calculate the flow rate how to understand it to solve further kindly help

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- Thread starter sehrish shakir
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- #1

- 16

- 1

i was provided by the radii from 0 to 5 cm and a parabolic profile is also given .. in numeric form i was asked to calculate the flow rate how to understand it to solve further kindly help

...

- #2

Chestermiller

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Please provide more detail about the locations where the velocity is provided, and the velocity values.

i was provided by the radii from 0 to 5 cm and a parabolic profile is also given .. in numeric form i was asked to calculate the flow rate how to understand it to solve further kindly help

...

- #3

- 16

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Thank you for kind response sir ,

it was a question in exam ... like

r=0,1,2,3,4,5

v=2,1.92,1.68,1.28,0.72,0

numerical values may be some digits different but i need to understand a problem .

now if diameter is 10cm then calculate the flow rate ?

it was a question in exam ... like

r=0,1,2,3,4,5

v=2,1.92,1.68,1.28,0.72,0

numerical values may be some digits different but i need to understand a problem .

now if diameter is 10cm then calculate the flow rate ?

Last edited:

- #4

Chestermiller

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- #5

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this is the relation

Q=A*v

but how to initiate ?

should i specified the boundary condition then integerate or can do some numerical analysis to evaluate integeral or find out the mean value of velocity then proceed ...

- #6

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i assumed it is parabolic as laminar has parabolic profile ..flow was laminar

- #7

Chestermiller

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No.Vz\Vm=2(1-r^2/R^2)

this is the relation

Q=A*v

but how to initiate ?

$$Q=\int_0^R{v_z(2\pi r)dr}$$

Does this make sense?

- #8

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thank you for reply sir,No.

$$Q=\int_0^R{v_z(2\pi r)dr}$$

Does this make sense?

yes i got it, it is the total flow rate through duct .

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