Mathematical modeling of nonlinear processes of heating (counterflow and direct-flow heat exchange) in metallurgy and machine construction

2008 ◽  
Vol 81 (1) ◽  
pp. 112-121
Author(s):  
Yu. S. Postol’nik ◽  
V. I. Timoshpol’skii ◽  
P. É. Ratnikov ◽  
O. A. Kondrasheva
Keyword(s):  
Mathematical Modeling ◽  
Heat Exchange ◽  
Machine Construction ◽  
Nonlinear Processes ◽  
Direct Flow ◽  
Flow Heat

Thermal Applications of Cellular Lattice Structures

2007 ◽  
Vol 539-543 ◽  
pp. 242-247 ◽  
Author(s):  
Haydn N.G. Wadley ◽  
Douglas T. Queheillalt
Keyword(s):  
Heat Exchange ◽  
Mechanical Strength ◽  
Lattice Structure ◽  
Cross Flow ◽  
Low Flow ◽  
Truss Structures ◽  
Lattice Structures ◽  
Highly Efficient ◽  
Unit Cells ◽  
Flow Heat

Numerous methods have recently emerged for fabricating cellular lattice structures with unit cells that can be repeated to create 3D space filling systems with very high interconnected pore fractions. These lattice structures possess exceptional mechanical strength resulting in highly efficient load supporting systems when configured as the cores of sandwich panels. These same structures also provide interesting possibilities for cross flow heat exchange. In this scenario, heat is transported from a locally heated facesheet through the lattice structure by conduction and is dissipated by a cross flow that propagates through the low flow resistant pore passages. The combination of efficient thermal conduction along the lattice trusses and low flow resistance through the pore channels results in highly efficient cross flow heat exchange. Recent research is investigating the use of hollow truss structures that enable their simultaneous use as heat pipes which significantly increases the efficiency of heat transport through the lattice and their mechanical strength. The relationships between heat transfer, frictional flow losses and topology of the lattice structure are discussed and opportunities for future developments identified.

Mathematical modeling of glass melt heat exchange in a cylindrical induction furnace

1994 ◽  
Vol 51 (3-4) ◽  
pp. 122-127
Author(s):  
A. A. Zhilin ◽  
A. N. Zamyatin ◽  
V. K. Shiff
Keyword(s):  
Mathematical Modeling ◽  
Heat Exchange ◽  
Induction Furnace

scholarly journals Analysis Of Three Layer Concentric Tube Heat Exchange Using Mathematic Modeling

2021 ◽  
Vol 10 (3) ◽  
pp. 86-92
Author(s):  
Rinaldy Valendry
Keyword(s):  
Mathematical Modeling ◽  
Heat Exchange ◽  
Coming Out ◽  
Theoretical Calculations ◽  
Fluid Temperature ◽  
Modeling Methods ◽  
Mathematic Modeling ◽  
Cold Fluid ◽  
Theory Calculation ◽  
Exchange Apparatus

A three-channel concentric pipes heat exchanger is a development or improvement of a two-channel concentric heat exchange apparatus. This study was conducted to determine the output temperature of each channel, and compare the results of theoretical calculations using mathematical modeling of experimental results conducted in the field. So that obtained difference of value between result of experiment to result of theory calculation. In this study have 3 variations of temperature data that is 50 °C, 55°C, and 60 °C with two streams namely CounterFlow and PararellFLow and discharge 2.5 l/minute, while cold fluid with 25 °C discharge 1.5 l/minute. From the above analysis it can be concluded that the temperature of the hot fluid coming out of the APK in the experiment tends to be higher than the temperature of the hot fluid coming out of the APK on theoretical calculations of mathematical modeling methods. Meanwhile, the cold cold fluid temperature coming out of the APK in experimental tends to be lower than the temperature of the cold fluid coming out of the APK on theoretical calculations of mathematical modeling methods.

scholarly journals Mathematical Modeling of Hydraulic Resistance in Pipes With Rough Walls

2018 ◽  
Vol 1 (1) ◽  
pp. 74
Author(s):  
Lobanov Lgor Evgenjevich
Keyword(s):  
Mathematical Modeling ◽  
Heat Exchange ◽  
Hydraulic Resistance ◽  
Rough Walls ◽  
Intensification Of Heat Exchange ◽  
Extended Range

In recent years, the numbers of patents have been devoted to the development of rough pipes. The technique theoretical settlement determine of factor of hydraulic resistance for round pipes with rough walls is developed on the basis of a principle of a superposition of complete viscosity in turbulent a layer mainly distinguished from the existing theories. The received results of account for the extended range of determining parameters much distinguished from appropriate given for round pipes with turbulizers, specify a level и intensification of heat exchange.

scholarly journals MATHEMATICAL MODELING OF HEAT EXCHANGE PROCESSES IN A COWSHED FOR THE WARM PERIOD

REPORTS ◽  
2021 ◽  
Vol 4 (338) ◽  
pp. 37-42
Author(s):  
V.G. Borulko ◽  
Yu.G. Ivanov ◽  
D.A. Ponizovkin ◽  
N.A. Shlychkova ◽  
N.M. Kostomakhin
Keyword(s):  
Mathematical Modeling ◽  
Heat Exchange ◽  
Warm Period ◽  
Exchange Processes

CONJUGATE HEAT TRANSFER IN METAL FOAM: GRAVITY DRIVEN AND FORCED FLOW HEAT EXCHANGE COEFFICIENTS DETERMINATION

2013 ◽  
Vol 16 (1) ◽  
pp. 41-58 ◽  
Author(s):  
J.-M. Hugo ◽  
E. Brun ◽  
Frederic Topin ◽  
Lounes Tadrist
Keyword(s):  
Heat Transfer ◽  
Heat Exchange ◽  
Conjugate Heat Transfer ◽  
Metal Foam ◽  
Forced Flow ◽  
Gravity Driven ◽  
Flow Heat
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