Question: In flow over cylinders, why does the drag coefficient suddenly drop when the boundary layer becomes turbulent? Isnt turbulence supposed to increase the drag coefficient

In flow over cylinders, why does the drag coefficient suddenly drop when the boundary layer becomes turbulent? Isn’t turbulence supposed to increase the drag coefficient instead of decreasing it?

Step by Step Solution

★★★★★

3.42 Rating (155 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

We are to discuss why the drag coefficient suddenly drops ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Fundamentals Thermal Fluid Questions!

Why is flow separation in flow over cylinders delayed when the boundary layer is turbulent?

In flow past a sphere, the boundary layer becomes turbulent at about ReD 2.5E5. To what air speed in mi/h does this correspond to a golf ball whose diameter is 1.6 in? Do the pressure, temperature,...

A large vertical plate is maintained at a surface temperature of 140oF and exposed to air at 1 atm and 70oF. Estimate the vertical position on the plate where the boundary layer becomes turbulent....

1. Consider two cases: Case I: Vertical plate (0.9 m high; 0.5 m wide at 32C with air at 22C). Case 2: Vertical plate (0.5 m high: 0.9 m wide at 22C with air at 32C). Which case gives the higher rate...

Why is flow separation in flow over cylinders delayed in turbulent flow?

4. (15 pts) In this video a highly-viscous viscous liquid (incompressible, Newtonian, density , viscosity ) is confined between two concentric, vertical cylinders of radius Ri and Ro for the inner...

Chapter 5: Hazardous Waste Site Clean-Up Technologies IN THIS CHAPTER Treatment technologies for contaminated hazardous waste sites Containment technologies for contaminated sites Innovative...

Please show all steps to reach given answer, thank you! 3B.1 Flow between coaxial cylinders and concentric spheres. (a) The space between two coaxial cylinders is filled with an incompressible fluid...

Please provide the answer for the following questions When two elastic cylinders are pressed against one another, they make contact over a strip of width L. This width is assumed known. In general,...

The economy's two most important financial markets are the investment market and the saving market. the bond market and the stock market. 4 financial markets and financial institutions. banks and the...

deployment plan for implementing a high-availability cluster for the entire environment. which focused on data-storage back-up and recovery, this new request is to extend the high-availability...

How would a sole trader record the withdrawal of cash from the business bank account for his own personal use? A . Dr Profit Cr Bank B . Dr Bank Cr Drawings C . Dr Drawings Cr Bank D . Dr Bank Cr...

5. Apply cluster analysis to the numerical data in the Excel file Credit Approval Decisions. Analyze the clusters and determine if cluster analysis would be a useful classification method for...

To determine air velocity changes, it is proposed to measure the electric current required to maintain a platinum wire of $0.25-\mathrm{mm}$ diameter at a constant temperature of \(77^{\circ}...

Hot water at $50^{\circ} \mathrm{C}$ is routed from one building in which it is generated to an adjoining building in which it is used for space heating. Transfer between the buildings occurs in a...

Pin fins are to be specified for use in an industrial cooling application. The fins will be subjected to a gas in cross flow at $V=10 \mathrm{~m} / \mathrm{s}$. The cylindrical fin has a diameter...

Please answer the all of the two questions 9) What is the Capitalized Equivalent worth of an infinite annuity of $1,000 paid every other year, when the interest rate is 11% annually? 10) You purchase...

The Kevin Challenge: A hospital is considering investing in a SCAN machine. The calculated cash flows are shown in the table below. Please provide a recommendation on whether they hospital should...

Lou Lewis borrows $20, 000 to be repaid over 9 years at 10 percent. Repayment of principal in the first year is: Use Appendix D. (Round "PV Factor" to 3 decimal places. Round your Intermediate...