Consider the unsteady mass conservation equation (1.5) as it might describe the flow accelerating through a duct with a variable cross section. If the largest velocity gradient measured locally is du/dx and the largest density gradient is dpldx, what order-of-magnitude relationship must exist between du/dx and dpldx for the simplified equation (1.8) to be applicable? Q: ap + u aw + = 0 az ay ap Hint 1: ap ay + v- + w (1.5) ax ax du dv aw Hint 2: ax (1.8) dy az + +
Consider the unsteady mass conservation equation (1.5) as it might describe the flow accelerating through a duct with a variable cross section. If the largest velocity gradient measured locally is du/dx and the largest density gradient is dpldx, what order-of-magnitude relationship must exist between du/dx and dpldx for the simplified equation (1.8) to be applicable? Q: ap + u aw + = 0 az ay ap Hint 1: ap ay + v- + w (1.5) ax ax du dv aw Hint 2: ax (1.8) dy az + +
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
Related questions
Question
![Q:
Consider the unsteady mass conservation equation (1.5) as it might
describe the flow accelerating through a duct with a variable cross section.
If the largest velocity gradient measured locally is du/dx and the largest
density gradient is dpldx, what order-of-magnitude relationship must
exist between du/dx and dpldx for the simplified equation (1.8) to be
applicable?
ap
ap
+p
ax
ap
ap
du
av
Hint 1:
aw
+
= 0
az
+u
at
ax
(1.5)
+ v.
+w.
ду
az
ду
du
aw
Hint 2:
ax
(1.8)
ду](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F33c1b6f8-ca92-4ab2-88ae-aa100f4ff9bf%2F2ac0b9a4-8977-4bca-9531-575bb16f890e%2Fleg0uma_processed.png&w=3840&q=75)
Transcribed Image Text:Q:
Consider the unsteady mass conservation equation (1.5) as it might
describe the flow accelerating through a duct with a variable cross section.
If the largest velocity gradient measured locally is du/dx and the largest
density gradient is dpldx, what order-of-magnitude relationship must
exist between du/dx and dpldx for the simplified equation (1.8) to be
applicable?
ap
ap
+p
ax
ap
ap
du
av
Hint 1:
aw
+
= 0
az
+u
at
ax
(1.5)
+ v.
+w.
ду
az
ду
du
aw
Hint 2:
ax
(1.8)
ду
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