Heat & Mass Transfer Consider the flow of water over a flat plate at a film...

Heat & Mass Transfer

Consider the flow of water over a flat plate at a film temperature of 25 °C. The plate is 10m long, and the Reynolds number at the end of the plate is 10⁶.

Determine:

The free stream velocity

Is the flow laminar or turbulent at the end of the plate?

Is the flow laminar or turbulent at the mid-length?

What is the average Nusselt number?

What is the average heat transfer coefficient?

What is the Nusselt number at the end?

What is the heat transfer coefficient at mid-length?

What is the drag coefficient at mid-length?

Solutions

Expert Solution

samet mamat answered 7 months ago

Next > < Previous

Related Solutions

Convection Heat transfer internal flow Consider water flowing in a heated tube. The tube is 14...

Convection Heat transfer internal flow Consider water flowing in a heated tube. The tube is 14 m long with an inner diameter of 1 cm. The heat is added at 1500 W/m2 uniformly along the tube. Water flows at 0.3 m/s. Use the following water property ? = 1000 kg/m3, ? = 1.4 × 10?3 kg/m·s, cp = 4.2 kJ/kg·K, k = 0.58 W/m·K, and determine 1. Heat transfer coefficient at the tube exit. 2. Tube surface temperature at the...

a heat transfer experiment consist of a stream of air blowing over a heated horizontal plate....

a heat transfer experiment consist of a stream of air blowing over a heated horizontal plate. what causes the formation of both velocity and thermal boundary layers? what causes a difference in thickness between them?

Re-derive an expression for average NuL (= hLL/k) for flow over a flat plate by integrating...

Re-derive an expression for average NuL (= hLL/k) for flow over a flat plate by integrating the expression for average hL for a mixed BL. For Rex,cr, use 123456 (keeping the same sequence), and find the constant B (in Eq. 7.38). Also show that for Rex,cr = 500,000, B is indeed equal to 871. eq. 7.38=> NuL=(0.037 ReL^(4/5)-B)Pr^(1/3) 0.6<=Pr<=60 Rex,c <= ReL <=108

Consider the flow of a liquid metal past a flat plate (Pr << 1). We have...

Consider the flow of a liquid metal past a flat plate (Pr << 1). We have shown that for a constant wall teemperature, T_o, the Nusselt number is given by Nu = 0.564*(Re^1/2)*(Pr^1/2). Show that if the surface is not a constant temperature, but is instead providing a constant heat flux, that the Nusselt number becomes Nu = 0.886*(Re^1/2)*(Pr^1/2). Start with the following expression for the temperature profile within a semi-infinite body with a constant heat flux boundary condition T...

Analytical Solution steps For a flat plate solar collector, with water as the working fluid, consider...

Analytical Solution steps For a flat plate solar collector, with water as the working fluid, consider a design for heating water from 22°C to 60°C. The temperature of the air and the surroundings is 310 K. The system is designed for a flow rate of 0.03 gpm. The water exhibits fully developed, laminar flow in a 0.05 diameter pipe, with a constant surface flux. The collector plate experiences losses due to convection and radiation, which can be accounted for using...

Consider the transient heat transfer of a solid object suddenly exposed to an unbounded flow at...

Consider the transient heat transfer of a solid object suddenly exposed to an unbounded flow at different temperature. Based on the Lumped-heat capacity model (LHCM), the response time of heat transfer to the solid can be used to determine the convective heat transfer coefficient. Assume that the solid initial temperature, the ambient fluid temperature, and a temperature at the center of solid at a given time (after the exposure) are measurable. (1) Ignoring the radiation, derive an equation to correlate...

we discussed two-film theory and the use of the overall mass transfer coefficients that will be...

we discussed two-film theory and the use of the overall mass transfer coefficients that will be one of our foundational components in solving practical mass transfer problems over the course of the semester. In your own words, explain what two-film theory is and how it simplifies real mass transfer across an interface? How does the overall mass transfer coefficient develop from two-film theory? Finally, what is the difference between the overall mass transfer coefficients based on the gas and liquid...

A uniform thin film of alcohol (n=1.36) lies on a flat glass plate (n=1.56). When monochromatic...

A uniform thin film of alcohol (n=1.36) lies on a flat glass plate (n=1.56). When monochromatic light, whose wavelength can be changed, is incident normally, the reflected light is a minimum for ?=515nm and a maximum for ?=644nm. What is the minimum thickness of the film? tmin = .....?..... nm

how to find surface temperature of the flat plate which is subjected to air flow from...

how to find surface temperature of the flat plate which is subjected to air flow from one side and constant temperature on the other side using Ansys fluent ?

Mention some ways or examples to increase Heat Transfer in an internal flow?

Subjects