Concept explainers
Consider steady, two-dimensional, incompressible flow due to a spiraling line vortex/sink flow centered on the z-axis. Streamlines and velocity components are shown in Fig. 9-87. The velocity field is
FIGURE P9-87
The pressure field as a function
Answer to Problem 89P
The pressure field as a function
Explanation of Solution
Given information:
The flow is steady, two-dimensional and incompressible.
The velocity components are
Here,
Write the expression for continuity equation.
Here, velocity components are
Write the expression for the
Here, density is
Write the expression for the
Calculation:
Substitute
Since both sides of Equation (IV) are equal, therefore continuity equation is verified.
Substitute
Integrate Equation (V) with respect to
Here, arbitrary function is
Differentiate Equation (VI) with respect to
Substitute
Substitute
Integrate Equation (VIII) with respect to
Here, arbitrary constant is
Substitute
Conclusion:
The pressure field as a function
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Chapter 9 Solutions
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