Internal forced convection
From ThermalFluidsPedia
Yuwen Zhang (Talk  contribs) 

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  <math>h=f(k,\mu ,c_{p},\rho ,u,D,x,\Delta T)</math>  +  <big><big><math>h=f(k,\mu ,c_{p},\rho ,u,D,x,\Delta T)</math></big></big> 
</center>  </center>  
{{EquationRef(1)}}  {{EquationRef(1)}}  
}  }  
The local heat transfer coefficient is a function of the fluid properties (viscosity, μ; thermal conductivity, k; density, ρ; specific heat, cp), geometry (D), temperature (ΔT), and flow velocity (u).  The local heat transfer coefficient is a function of the fluid properties (viscosity, μ; thermal conductivity, k; density, ρ; specific heat, cp), geometry (D), temperature (ΔT), and flow velocity (u).  
  In dimensionless form  +  In dimensionless form, 
{ class="wikitable" border="0"  { class="wikitable" border="0"  
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The above relation indicates that the local Nusselt number for flow in a circular tube is a function of the Reynolds number, Prandtl number, and x/D. The goal of this chapter is to develop the heat and mass transfer coefficients for various internal flow configurations under different operating conditions.  The above relation indicates that the local Nusselt number for flow in a circular tube is a function of the Reynolds number, Prandtl number, and x/D. The goal of this chapter is to develop the heat and mass transfer coefficients for various internal flow configurations under different operating conditions.  
  +  
+  *[[Basics of Internal Forced ConvectionBasics]]  
+  *[[Fullydeveloped flow heat transfer]]  
+  *[[Thermally developing laminar flow]]  
+  *[[Combined hydrodynamic and thermal entrance effect]]  
+  *[[Developing flow]]  
+  *[[Numerical solution of internal convectionNumerical solutions]]  
+  *[[Forced convection in microchannels]]  
+  *[[Internal turbulent flow]]. 
Revision as of 08:48, 30 June 2010
Internal heat and mass transfer have significant applications in a variety of technologies, including heat exchangers and electronic cooling. Internal convective heat and mass transfer can be classified as either forced or natural convection. An initial simple approach to internal convective heat transfer is to utilize the dimensional analysis presented in Chapter 1 to obtain important parameters and dimensionless numbers for the steady laminar flow of an incompressible fluid in a convectional tube, i.e.,
h = f(k,μ,c_{p},ρ,u,D,x,ΔT) 
The local heat transfer coefficient is a function of the fluid properties (viscosity, μ; thermal conductivity, k; density, ρ; specific heat, cp), geometry (D), temperature (ΔT), and flow velocity (u). In dimensionless form,

The above relation indicates that the local Nusselt number for flow in a circular tube is a function of the Reynolds number, Prandtl number, and x/D. The goal of this chapter is to develop the heat and mass transfer coefficients for various internal flow configurations under different operating conditions.