The sphere is dropped in gasoline at 20 ° C.Ignoring its acceleration phase, what will it's terminal (constant)fall velocity be, from Fig. ? 4Transition to turbulentboundary layer3Cylinder (two-dimensional)1Sphere10102103104105106107Reg =PUd(a)

Answered: 4 Transition to turbulent boundary…

Engineering

Mechanical Engineering

4 Transition to turbulent boundary layer 3 Cylinder (two-dimensional) 1 Sphere 10 102 103 104 105 106 107 Reg = PUd (a)

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.36P

See similar textbooks

Related questions

Q: 7. A flat plate has a length of 40 cm and width of 1 m. Air, at pressure of 2 atm, temperature of 57…

Q: Experimental studies have shown that the rate of the decay of kinetic energy for homogeneous…

A: Experimental studies have shown that the rate of the decay of kinetic energy for homogeneous…

Q: For creeping flow over a three-dimensional object, the aerodynamic drag on the object does not…

A: Creeping flow is also known as Stokes Flow. Drag is the resisting force acting in the opposite…

Q: A propeller driven aircraft has the following parabolic non-dimensional drag curve: CD = 0.015 +…

Q: Laminar Flat-Plate Boundary Layer: Exact Solution 9.6 Plot the Blasius solution for the laminar…

A: Given: The velocity profile equation,

Q: The Blasius boundary layer profile is an exact solution of the boundary layer equations for flow…

A: Writing the sine series as follows,

Q: Two definitions of displacement thickness are given in this chapter. Write both definitions in your…

Q: A 5,000 lb airplane with wing area of 250 sq. ft and power available of 450 hp is at sea level…

A: Please find the answer below

Q: Atmospheric boundary layers are very thick but followformulas very similar to those of flat-plate…

A: Write the properties of air at 20º.

Q: Air at 20°C and 1 atm fl ows at 50 ft/s past a thin fl at platewhose area (bL) is 24 ft2. If the…

Q: A thin equilateral triangle plate with a = 104.5 cm (as shown below) is immersed parallel to a U =…

A: Thin equilateral triangle plate a =104.5cmV∞ =11.3 msT =20°C , P =∆atmPair =1.2 kgm3 , μ…

Q: Which one of the following is not a flow region where the boundary layer approximation may be…

A: In the flows mentioned above, (a) The jet has a boundary layer in its circumferential region. There…

Q: Air at 20 °C flows at V = 10 m/s over a flat plate of length L= 1.52 m and width W = 2 m. Calculate…

A: Boundary layer thickness is the distance from the plate in a vertical direction up to where velocity…

Q: Assume that a radioactive dust particle approximates asphere of density 2400 kg/m3. How long, in…

A: (a) It is assumed that Stokes's law is applied for small particles. The dynamics viscosity is taken…

Q: 13) An inflated toy balloon is about 8g, with a cross-sectional area of 0.023 m'. It falls in air…

Q: Dust particles of diameter 0.06 mm and density 1.6 g/cm are unsettled during high winds and rise to…

Q: Explain boundary layer thickness?

A: Boundary layer thickness is described as a vertical distance from the boundary up to the point where…

Q: We usually think of boundary layers as occurring along solid walls. However, there are other flow…

A: The boundary layer is defined as the definite layer of the fluid adjacent to the thick surface in…

Q: Q.3 Air (density 1.2 kg/m3 and kinematic viscosity 15 centistokes) flows over a flat plate, at zero…

Q: A light aircraft flies at 30 m/s in the air at 20°C and 1 atm.Its wing is a NACA 0009 airfoil, with…

A: (a) Calculate the Reynolds number for the flow based on the chord length. Rec=ρUcμ Here, c is the…

Q: NACA 664-221 Chord c = 150 cm 1) What is the CL range to achieve the minimum coefficient of drag? 2)…

A: NACA 664-221 Its a 6 series aerofoil 1st digit '6' - 6 Series aerofoil 2nd digit 6 -clockwise…

Q: Air at 20 °C flows at V = 10 m/s over a flat plate of length L= 1.52 m and width W = 2 m. Calculate…

A: Air temperature, T=20oC Air speed, V=10 m/s Length of the flat plate, L=1.52 m Width of the plate,…

Q: A spherical raindrop that is D= 1/8 inch in diameter falls through the air at sea-level. a) If the…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: Consider a rectangular wing with a NACA 0009 airfoil section spanning the test section of a wind…

Q: Based strictly on your understanding of the flat-plate theoryplus adverse and favorable pressure…

A: From left to right flow, Iniatialy larger pressure gradient but as flow moves past aerofoil lesser…

Q: A hydrofoil 0.366 m long and 1.82 m wide is placed in a water flow of 12.9 m/s, with p = 1025.3 kg/m…

A: Dimensions of hydrofoil, Length, L=0.366m and width, W=1.82m Free stream velocity, U0=12.9m/s…

Q: A flat plate ( 1.5 m) long and ( 1.5 m) wide is towed in water ( p 1000 kg/m and v=1.31 * 10 “m² /s)…

Q: A tlat plate of length L and height d is placed at a wall and is parallel to an approaching boundary…

A: Consider a strip (shown in green colour) of height dy and length as same as the length of the plate,…

Q: 4. What is flux-gradient theory? What is mixing length hypothesis? Use both to derive the Ekman…

A: The Ekman layer is the layer in a liquid where there is a power balance between pressure inclination…

Q: Air at 20°C flows at V = 80.0 m/s over a smooth flat plate of length L = 17.5 m. Plot the turbulent…

A: Write the expression of Reynolds Number, ReL=VLν The kinematic viscosity of air at 20 oC is taken…

Q: Water flows at a velocity of 1.2 m/s over a flat plate 1.2 m long. Assume 1/7th power law and…

A: Due to no slip condition at the hydrofoil surface, there develops a region where viscous effect…

Q: (d) Heat transfer on a circular cylinder, the second minima on Nu vs T curve due to which flow…

A: As the parts A, B and C are answered. We are solve for parts d, e and f. Please request another…

Q: 8. A flat plate ( 1.5 m ) long and ( 1.5 m ) wide is towed in water (p = 1000 kg/m and v=1.31 * 10 “…

A: The given values are length l=1.5m, width b=1.5m, density ρ=1000kg/m3 , kinematic viscosity…

Q: Explain briefly the advantages of using Von Karman Approximation Method in determining the boundary…

A: The advantages of using the Von-Karman approximation method are as follows: It can be used to…

Q: Explain briefly the advantages of using Von Karman Method in determining the boundary layer…

A: The Von Karman approximation makes it simple to find boundary layer parameters, and the benefits are…

Q: a) Which of the profiles in the figure below can be inviscidly unstable (refer to the names given in…

Q: Air flows at 15°C with a velocity of 12 m/s over a flat plate whose length is 80 cm. Using…

A: The Reynolds number for the given condition is Re=VLν Here V is the velocity of air L is the length…

Q: a. What is a favorable pressure gradient? What is an adverse pressure gradient? b. What is boundary…

Q: 8. A flat plate ( 1.5 m ) long and ( 1.5 m ) wide is towed in water ( p = 1000 kg/m and v=1.31 * 10…

Q: Air at 15°C flows at 10 m/s over a flat plate of length 3 m. Using one-seventh power law of the…

A: First, determine the Reynold number for the given flow.

Q: A flat plate of length equal to 50 cm is parallel to a 25 m/s stream velocity. What is the shear…

Q: a) A sphere (Case 1) is modified with a fairing at the back of sphere (Case 2) and a housing (Case…

Q: Let the flow straighteners in Fig. form an array of20 x 20 boxes of size a = 4 cm and L = 25 cm. If…

A: given:ρ=1.205kg/m3μ=1.78×10-5kg/msside of square box a=0.04mlength of square box L=0.25mvelocity of…

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

The sphere is dropped in gasoline at 20 ° C.
Ignoring its acceleration phase, what will it's terminal (constant)
fall velocity be, from Fig. ?

4
Transition to turbulent
boundary layer
3
Cylinder (two-dimensional)
1
Sphere
10
102
103
104
105
106
107
Reg =
PUd
(a)

Expert Solution

Step 1

For gasoline at 20°C, take ρ ≈ 680 kg/m3 and μ ≈ 2.92E−4 kg/ms. For steel take ρ ≈ 7800 kg/m³. Then, in “terminal” velocity, the net weight equals the drag force:

$W_{n e t} = (ρ_{s t e e l} - ρ_{g a s o l i n e}) g \frac{π}{6} D^{3} = D r a g f o r c e$

Step by step

Solved in 2 steps

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

:Write the correspond boundary conditions for the below one-dimensional configurations I, Io
Sub : transport phenomena
Consider the following pdf: Is this pdf discrete or continuous?
Exercices 4 Rockets are usually propelled by ejecting gases from the combustion of a liquid fuel mixture. However, this solution is rather inefficient to transport spacemen to other planets. A proposed solution is to use plasma engines, the VASIMR engines. The gases ejected by these engines do not come from a combustion but are simply heated by an electric resistance at high temperature. However, such engines are very greedy in electricity, it would thus be necessary to install on the spacecrafts nuclear reactors. We consider the following characteristics: Loss of mass due to nuclear reactions A : 5,05 ug/s Mass of ejected gas u: 10,1 g/s Gas ejection velocity u: 192 m/s 1 What is the "source" flow rate qs in kg/s? 2 What is the inflow qi in kg/s? 3 What is the outflow qo in kg/s? Once in orbit around the Earth, it is necessary, to travel towards Mars, to increase the speed of the rocket of 4,4 km/s. Assuming the variation of mass due to the nuclear reactions negligible, during how…
One model of the glomerular membrane is a microporous membrane in which right cylindrical porespenetrate all the way through the membrane. Assume that the pores have a length of 50 nm and aradius of 3.5 nm. The viscosity of plasma is 0.002 Pa s. The average hydrostatic pressure in theglomerulus is 60 mm Hg, hydrostatic pressure in Bowman’s space is 20 mm Hg and the averageoncotic pressure of glomerular capillary blood is 28 mm Hg.A. Calculate the flow through a single pore assuming laminar flow (use the Poiseuille flowequation).B. How many pores would there have to be to produce a normal GFR?C. If the total aggregate area of the kidneys for filtration is 1.5 m2, what is the density of thepores (number of pores per unit area)D. What fraction of the area is present as pores?
Consider a wall of thickness 50 mm and thermal conductivity 14 W/m.K, the left side (x-0) is insulated. Heat generation (q) is present within the wall and the one dimensional steady-state temperature distribution is given by T(x) = ax +bxtc [°C] , where c 200 °C, a = -1285 °C/m , b=needs to he determined, andx is in meters. What is the heat fluxes at the right side, x = L, (kW/m )? 9, K 4L) Insulation
MODFLOW (or SWAT+) for groundwater contaminant transport and fate modeling
“Dynamics
Define dimensional homogeneity.
Specific Heat, Cp Water Thermal Thermal Content, Temperature, T Density, p Conductivity, k Ibm/ft3 Diffusivity, a ft2/s Food %(mass) °F Btu/h-ft.°F Btu/lbm-R Fruits/Vegetables Apple juice Apples Apples, dried Apricots, dried Bananas, fresh 1.51 x 10-6 1.47 x 10-6 87 68 62.4 0.323 0.922 85 32-86 52.4 0.242 0.910 41.6 73 53.4 0.127 1.03 x 10-6 0.650 1.22 x 10-6 1.51 × 10-6 43.6 73 82.4 0.217 0.662 76 41 61.2 0.278 0.856 Broccoli 21 35.0 0.223 | 1.42 x 10-6 Cherries, fresh Figs Grape juice 92 32-86 65.5 0.315 0.952 40.4 73 77.5 0.179 1.03 x 10-6 0.642 1.51 × 10-6 1.51 × 10-6 89 68 62.4 0.328 0.934 Peaches 36-90 2-32 59.9 0.304 0.934 Plums 3 38.1 0.143 | Potatoes 32-158 0-70 65.7 0.288 1.40 x 10-6 0.868 Raisins 32 73 86.2 0.217 1.18 x 10-6 0.592 Meats Beef, ground Beef, lean 67 43 59.3 0.235 1.40 x 10-6 0.802 74 37 68.0 0.272 1.40 x 10-6 0.844 Beef fat 95 50.5 0.110 72 95 73 Beef liver 0.259 0.832 1.18 x 10-6 1.40 x 10-6 Cat food 39.7 71.2 0.188 0.638 Chicken breast 75 32 65.5 0.275 0.850
a 4a AsiacelI K/s images.jpeg-\.jpg → DRAW F. B. D AND SHOWTHE DIRECTION OF FRICTION FORCE 100 kg 20° mo
Air is compressed by a compressor in steady-state operation, i.e. the inlet mass flow rate qm is constant in time. The compressor is airtight. The area of the inlet and outlet cross-section is A and AOUT, respectively. The outlet-to-inlet density ratio is PouT PIN the outlet-to-inlet mass flow rate ratio is 9m-OUT/9m-IN- What is the outlet-to-inlet volume flow rate ratio? 9V-OUT/av-IN =? Select one: a. 9V-OUT/av-IN = (A OUT'A IN) (POUT PIN b. 9V-OUT/av-IN = PIN/POUT C. 9V-OUT/av-IN = 9m-OUT/ 9m-IN d. 9V-OUT/av-IN=AOUTAIN