冷媒の水平平滑管内沸騰・蒸発熱伝達に関する研究

第1章 序論 第2章 実験装置および実験方法 第3章 液単相熱伝達 第4章 純冷媒の沸騰･蒸発熱伝達 第5章 混合冷媒の沸騰･蒸発熱伝達 第6章 CFC12とその代替冷媒HFC134aの沸騰･蒸発熱伝達係数の比較 第7章 沸騰･蒸発熱伝達におよぼす伝熱面汚れの影響 第8章 圧力損失 第9章 総括Made available in DSpace on 2012-07-04T00:27:36Z (GMT). No. of bitstreams: 4 momoki1.pdf: 9318310 bytes, checksum: 9daf39b5de484bc688f42b05c851d594 (MD5) momoki2.pdf: 9744911 bytes, checksum: 107c444e01951dce6cf96c66d165cb61 (MD5) momoki3.pdf: 10738290 bytes, checksum: 29a8c2e1e3d5d88e253b50373424480c (MD5) momoki4.pdf: 12120581 bytes, checksum: bb88c94fe817b1c12e00c7037da6b3bb (MD5) Previous issue date: 1992-03-2

Effect of Viscous Dissipation on Fully Developed Laminar Heat Transfer of Power-Law Non-Newtonian Fluids in Plane Couette-Poiseuille Flow

Fully developed laminar heat transfer of a non-Newtonian fluid flowing between two parallel plates with one moving plate was analyzed taking into account the viscous dissipation of the flowing fluid. Applying the velocity profile obtained for the plane Couette-Poiseuille laminar flow, the energy equation with the viscous dissipation term was exactly solved for the boundary conditions of constant wall heat flux at one wall with the other insulated. The effects of the relative velocity of a moving plate, flow index and Brinkman number on Nusselt numbers at the plate walls were discussed

Plane Coutte-Poiseuille Flow of Power-Law Non-Newtonian Fluids

The fully developed laminar flow of a non-Newtonian fluid flowing between two parallel plates with one moving plate was studied analytically. Applying the shear stress described by the power-law model, the exact solutions for the momentum equation were obtained. The effects of the velocity of a moving plate and the flow index of a non-Newtonian power-law fluid on the velocity distribution and friction factor have been discussed

Effects of Moving Core Velocity and Viscous Dissipation on Fully Developed Laminar Heat Transfer in Concentric Annuli

Fully developed laminar heat transfer of a Newtonian fluid in a concentric annulus with an axially moving core was analyzed taking into account the viscous dissipation of the flowing fluid. The effects of the relative velocity of a moving core and viscous dissipation on the temperature distributions and Nusselt numbers at the tube walls have been discussed

Laminar heat transfer in the thermal entrance region of concentric annuli with moving heated cores : Part II : The cases with the third and fourth kinds of thermal boundary condition

Consideration is given to the effects of viscous dissipation on the developing heat transfer between a fully developed laminar non-Newtonian fluid flow and a concentric annular geometry with a moving heated core. In this report, the results with the third and fourth kinds of thermal boundary condition are presented. Applying the shear stress described by the modified power-law model, the energy equation including the viscous dissipation term is solved numerically. The effects of radius ratio, flow index, relative core velocity, dimensionless shear rate parameter and Brinkman number on temperature distribution and Nusselt numbers are discussed

Effects of viscous disspation and fluid axial heat conduction on entrance-region heat transfer in parallel plates : Part I : The thermal boundary condition of the first kind

Consideration is given to the effects of viscous dissipation and fluid axial heat conduction on the heat transfer in the thermal entrance region of a laminar plane Couette-Poiseuille flow. The temperature distribution of the fluid for -∞<z<∞ is determined by solving the energy equation including the viscous dissipation term and the fluid axial heat conduction term subject to the constant wall temperature boundary condition. The results indicate that viscous heating has a strong effect where velocity gradient is large and, because of the heat conducted upstream, transverse variation in fluid temperature exists in the region z≤0 and the temperature profile at z=0 is greatly affected by fluid axial heat conduction. The effects of relative velocity, Brinkman number and Peclet number on developing temperature distribution and Nusselt number at the walls are discussed

Laminar heat transfer in the thermal entrance region of concentric annuli with moving heated cores : Part I : The cases with the first and second kinds of the thermal boundary condition

Consideration is given to the effects of viscous dissipation on the developing heat transfer between a fully developed laminar non-Newtonian fluid flow and a concentric annular geometry with a moving heated core. In this report, the results with the first and second kinds of thermal boundary condition are presented. Applying the shear stress described by the modified power-law model, the energy equation including the viscous dissipation term is solved numerically. The effects of radius ratio, flow index, relative core velocity, dimensionless shear rate parameter and Brinkman number on temperature distribution and Nusselt number are discussed

Heat transfer for modified power law fluids in a concentric annulus with a heated fixed outer tube

The present paper is an extension of the previous study on fully developed laminar heat transfer of modified power-law fluids in a concentric annulus with an axially moving core and deals with the case for the boundary conditions of constant heat flux at the fixed outer tube with the moving core insulated. Applying the shear stress described by the modified power-law model, the energy equation including the viscous dissipation term is solved numerically. The numerical results are presented graphically for temperature profiles and Nusselt number at the outer tube with a number of parameters such as viscous dissipation effect, rheological properties and the boundary conditions. The effects of radius ratio, the flow index, the relative core velocity, the dimensionless shear rate parameter and Brinkman number on the temperature distribution and Nusselt number are discussed

Heat transfer for modified power law fluids in concentric annuli with heated moving cores

The fully developed laminar heat transfer of modified power-law fluids in a concentric annulus with an axially moving core was analyzed taking into account the viscous dissipation of the flowing fluid. Applying the shear stress described by the modified power-law model, the energy equation including the viscous dissipation term is solved numerically for the thermal boundary conditions of constant heat flux at the moving core with the fixed outer tube insulated. The effects of the radius ratio, the flow index, the relative core velocity, dimensionless shear rate parameter and Brinkman number on the temperature distribution and Nusselt numbers are discussed

Fluid flow for modified power law fluids in concentric annuli with axially moving cores

Fully developed laminar flow of modified power law fluids in a concentric annulus with an axially moving core is studied numerically. Applying the shear stress described by the modified power law model, the effects of the radius ratio, relative velocity of the core, the flow index and dimensionless shear rate parameter on the velocity distribution and friction factor are discussed