Fundamentals of Momentum, Heat, and Mass Transfer
Fundamentals of Momentum, Heat, and Mass Transfer
6th Edition
ISBN: 9781118947463
Author: James Welty, Gregory L. Rorrer, David G. Foster
Publisher: WILEY
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Chapter 4, Problem 4.5P
Interpretation Introduction

Interpretation:The value of discharge velocity for a steady flow should be calculated.

Concept introduction:

Law of conservation of mass: It states that energy can neither be created nor be destroyed. The generalized form of an equation is written as:

[Rate of mass in from control volume]- [Rate of mass out from control volume] + [Rate of accumulation]

Volume Flow rate:

For steady-state:At the condition of steady-state flow, the properties of fluids do not change over the period of time.

Inflow volume flow rate = Outflow volume flow rate

  Q1=Q2

Where

  Q1=A1V1Q2=A2V2

Using the above equations,

  A1=πr12A2=πr22

Where,

  A1 and A2 are the area for inlet and outlet.

  r1 is the radius at the inlet of the pipe.

  r2 is the radius at the outlet of the pipe.

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