What is the closure problem, which occurs when applying
Reynolds-averaging to the Navier-
Stokes equations, and...
What is the closure problem, which occurs when applying
Reynolds-averaging to the Navier-
Stokes equations, and why is it a problem? How does one work around
it?
For the case of incompressible flow, write all 3 components of
the Navier-Stokes equations and the complete form of the
differential continuity equation.
Starting from the general expression of the Navier-Stokes
equations in cylindrical coordinates, provide the form of the
equations for an axisymmetric, steady flow. Explicitly write down
the continuity equation as well as the momentum equation in all
relevant directions in terms of partial derivatives. (Hint: How
much is uθ for this flow? Explain why. How much is ∂/∂θ ?
IMPORTANT NOTE: Please have the answer complete,
clear and computer generated!!
Basic JAVA Question
When we try to run this program, a problem occurs. What is this
problem called? And why does this problem occur here?
public class Main {
public static void main(String[] args) {
PhoneNumber pn = new PhoneNumber();
System.out.println(pn.isTollFree());
}
}
class PhoneNumber {
String number;
public boolean isTollFree() {
return number.charAt(1) == '8';
}
}
4. Explain and show formulaically that rotating
magnetic field occurs when applying ia=Iscoswst and ib=Isinwst with
phase A and phase B windings to 90° spatially on the stator of the
induction machine or synchronous machine.
(writer: Sorry. The original is not english, so I
uploaded it using Google Translate. Please let me know if there is
a mistake in the translation.)
Under coverage is a problem that occurs in surveys when some
groups in the population are underrepresented in the sampling frame
used to select the sample. We can check for under
coverage by comparing the sample with known facts about the
population.
Suppose we take an SRS of n = 500 people from a population that
is 25% Hispanic. How many Hispanics are expected in a
given sample? 125
What is the standard deviation for the number of Hispanics in a
sample?...
Using ICE tables and acid-base equations, compare the change in
pH that occurs when 10 mL of a 0.10 M NaOH is added to 100 mL of
pure water, and when it is added to 100 mL of a benzoic acid buffer
soltution that is 0.15 M in both
C6H5CO2H and
C6H5CO2Na. *Hint: M1V1=M2V2
1. Which of the following results in a decrease in the
investment account when applying the equity method?
a. Net income of the investor
b. Net income of the investee
c. Unrealized gain on intercompany inventory transfers for the
current year
d. Dividends paid by the investor
e. Purchase of additional common stock by the investor during
the current year
2. Which of the following is a characteristic of a business
combination that should be accounted for as a purchase?...