1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
11111nata11111 [884]
3 years ago
13

The value of the critical Reynolds number for the flow over a flat plate is 5 x10^5. The significance of the value is:

Engineering
1 answer:
nata0808 [166]3 years ago
8 0

Answer:

(c) If the Reynolds number for the plate based on the length L is greater than this value, then the boundary layer is turbulent over the entire plate.

Explanation:

The applicability of the Reynolds number differs depending on the specifications of the fluid flow such as the variation of density (compressibility), a variation of viscosity (Non-Newtonian), being internal- or external flow, etc. The critical Reynolds number is the expression of the value to specify transition among regimes which diversifies regarding type of flow and geometry as well. Whilst the critical Reynolds number for turbulent flow in a pipe is 2000, the critical Reynolds number for turbulent flow over a flat plate, when the flow velocity is the free-stream velocity, is in a range from 10 raised to power 5 to 10 raised to power 6, .4

You might be interested in
The bulk density of a compacted soil specimen (Gs = 2.70) and its water content are 2060 kg/m^3 and 15.3%, respectively. If the
yaroslaw [1]

Answer:

the saturated density should be

Explanation:

4 0
3 years ago
With reference to the NSPE Code of Ethics, which one of the following statements is true regarding the ethical obligations of th
34kurt

Answer: c. The VW engineers involved were ethically obligated to hold paramount the health, welfare and safety of the public even if their supervisors directed them to implement software and hardware that enabled cheating on the emissions testing software.

Explanation: The National Society of professional Engineers, NSPE define the code of ethics which must guide engineers in their duty. These codes act as principles of personal conduct, towards the public and their employers.  

One of the areas covered by these codes is overriding importance of the safety and health of the public to any other factor. In addition, engineers are to avoid deception and maintain the reputation of their profession. These cannot be sacrificed for the financial gain of their employers or explained away by saying they are following the direction of their employers. While they have certain responsibilities to their employers, the health welfare and safety of the public is more important.  

4 0
3 years ago
9. A vehicle is having routine maintenance performed.
dexar [7]

Answer: b

Explanation:

8 0
3 years ago
Regeneration can only increase the efficiency of a Brayton cycle when working fluid leaving the turbine is hotter than the worki
storchak [24]

Answer:

True, <em>Regeneration is the only process where increases the efficiency of a Brayton cycle when working fluid leaving the turbine is hotter than working fluid leaving the compressor</em>.

Option: A

<u>Explanation: </u>

To increase the efficiency of brayton cycle there are three ways which includes inter-cooling, reheating and regeneration. <em>Regeneration</em> technique <em>is used when a turbine exhaust fluids have higher temperature than the working fluid leaving the compressor of the turbine. </em>

<em>Thermal efficiency</em> of a turbine is increased as <em>the exhaust fluid having higher temperatures are used in heat exchanger where the fluids from the compressor enters and increases the temperature of the fluids leaving the compressor. </em>

6 0
3 years ago
Read 2 more answers
Select the correct answer. Which existing technology did engineers use to enhance the speed of propeller-driven airplanes
Musya8 [376]

metallurgy:

Explanation:

7 0
2 years ago
Other questions:
  • Define a public static method named s2f that takes two String arguments, the name of a file and some text. The method creates th
    5·1 answer
  • Which of the two materials (brittle vs. ductile) usually obtains the highest ultimate strength and why?
    5·1 answer
  • A common rule of thumb for controller discretization is to have "6 samples per rise time" in order to achieve a reasonable appro
    9·1 answer
  • 1. The area of the given triangle is 25 square units. What is the value of x?<br> X+2
    8·1 answer
  • Pls help! 39 points!!
    5·2 answers
  • g An analog voice signal, sampled at the rate of 8 kHz (8000 samples/second), is to be transmitted by using binary frequency shi
    12·1 answer
  • Cómo se llama el componente, que permite abrir o cerrar un circuito eléctrico
    8·1 answer
  • If you log into the admin account on windows 10, will the admin be notified ? ​
    14·2 answers
  • A skull and crossbones pictogram indicates this kind of information about a chemical.
    14·1 answer
  • The ruler game, HELPPPP PLS
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!