d²udy²pg where g is the acceleration due to gravityH hfilmsurfaceairFigure Q2 Vertical Film FlowFigure Q2 shows a section through a water film flowing down a verticalsurface. The conservation equations that describe the flow may be written infull as:Mass conservationди ƏvəxƏyMomentum conservationduJu ди+u -+v==dtəx дуdvdvƏv=dt əx дуDetermine and justify the boundary conditions that apply and simplify thegoverning equations, with justification to show that:X-100+ 0 + 0 + F₂4+ [246 +20 + 40

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Engineering

Mechanical Engineering

dy² Pg , where g is the acceleration due to gravity μ

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.

Question

d²u
dy²
pg where g is the acceleration due to gravity
H

h
film
surface
air
Figure Q2 Vertical Film Flow
Figure Q2 shows a section through a water film flowing down a vertical
surface. The conservation equations that describe the flow may be written in
full as:
Mass conservation
ди Əv
əx
Əy
Momentum conservation
du
Ju ди
+u -+v==
dt
əx ду
dv
dv
Əv
=
dt əx ду
Determine and justify the boundary conditions that apply and simplify the
governing equations, with justification to show that:
X
-100+ 0 + 0 + F₂
4+ [246 +20 + 40

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