GATE XE concept:stream-function PYQs & Answers

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concept:stream-function

Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.

Questions 1–7 of 7. Imported answers require independent review unless marked reviewed.

Topic practice 7 questionsPage 1 of 1

An incompressible fluid flows between a pair of infinite plates separated by a distance

. The top plate is moving with a constant velocity

, whereas the bottom plate is stationary, as shown in the figure. The difference of the stream functions (

) at the two plates for a laminar and fully-developed flow is equal to

Diagram for Engineering Sciences question 32

Your answerChoose one option.

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Conservation of mass for a steady axisymmetric flow field in the cylindrical

coordinates is:

Here,

and

are radial and axial components of velocity, respectively. Which one of the following options is correct if

is the stream function?

Your answerChoose one option.

and

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In a steady two-dimensional compressible flow,

and

are the

- and

-components of flow velocity, respectively and

is the fluid density. Among the following pairs of relations, which one(s) perfectly satisfies/satisfy the definition of stream function,

, for this flow?

Your answerSelect all correct options. You can choose more than one.

and

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The volume flow between any two points not lying on the same stream in a flow field is equal to

Your answerChoose one option.

Change in strain rate between the points

Change in vorticity between the points

Change in potential function between the points

Change in stream function between the points

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The stream function of a flow field is

where

is a constant. Which one of the following represents the vorticity?

Your answerChoose one option.

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If the stream function (

) for a two-dimensional incompressible flow field is given as

, the corresponding velocity field is

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The stream function (

) of a velocity field at any location

is given as,

. What is the rate of rotation of a fluid element located at

Your answerChoose one option.

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GATE XE concept:stream-function PYQs

How to practice concept:stream-function

Question 32

Question 27

Question 35

Question 7

Question 13

Question 6

Question 17