Processing of temperature field in chemical microreactors with
... This work is devoted to the first analysis of temperature fields related to chemical microfluidic reactors. The heat transport around and inside a microchannel is both convective and diffusive with spatial distribution of source terms and strong conductive effects in the channel surrounding. With si ...
... This work is devoted to the first analysis of temperature fields related to chemical microfluidic reactors. The heat transport around and inside a microchannel is both convective and diffusive with spatial distribution of source terms and strong conductive effects in the channel surrounding. With si ...
Heat Transfer Through a Porous Medium
... where the Brinkman number is defined by Br ¼ mU2/kmDT ¼ EcPr, where the Eckert number Ec is defined by Ec ¼ U2/cPDT. For most situations the Darcy number K/L2 is small, so viscous dissipation is important at even modest values of the Brinkman number. For forced convection the choice of the character ...
... where the Brinkman number is defined by Br ¼ mU2/kmDT ¼ EcPr, where the Eckert number Ec is defined by Ec ¼ U2/cPDT. For most situations the Darcy number K/L2 is small, so viscous dissipation is important at even modest values of the Brinkman number. For forced convection the choice of the character ...
Modelling the hot rolling process using a finite volume
... parameter, which is defined by Z = ε exp[Q (RT )] , where Q is the apparent activation energy for deformation, R is the gas constant (8.31 J/K mol) and T is the absolute temperature of deformation. Likewise, the flow stresses σ0 and σss depend upon the deformation conditions and can be generally de ...
... parameter, which is defined by Z = ε exp[Q (RT )] , where Q is the apparent activation energy for deformation, R is the gas constant (8.31 J/K mol) and T is the absolute temperature of deformation. Likewise, the flow stresses σ0 and σss depend upon the deformation conditions and can be generally de ...
Thermodynamics: Notes
... The system and the surroundings are separated by a boundary or a wall. They may, in general, exchange energy and matter, depending on the nature of the wall. A closed system is one where there is no exchange of matter. An equilibrium state is one in which all the bulk physical properties of the syst ...
... The system and the surroundings are separated by a boundary or a wall. They may, in general, exchange energy and matter, depending on the nature of the wall. A closed system is one where there is no exchange of matter. An equilibrium state is one in which all the bulk physical properties of the syst ...
Finite element analysis of natural convection flow in a isosceles
... cavity [13,14]. This approach provides the satisfactory results, and the thermal equilibrium of the system is explained in terms of heat transfer rates along the left and right walls. Singularity does not appear in case of sinusoidally heated wall. In the current study, we have used Galerkin finite e ...
... cavity [13,14]. This approach provides the satisfactory results, and the thermal equilibrium of the system is explained in terms of heat transfer rates along the left and right walls. Singularity does not appear in case of sinusoidally heated wall. In the current study, we have used Galerkin finite e ...
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J107
... 3. Ratio ks/kf: This parameter is the ratio of thermal conductivities of the channel material and the fluid. The higher the ks value, the higher will be the effect due to axial conduction. The channel walls used in heat transfer experiments reported in literature include glass, stainless steel, sili ...
... 3. Ratio ks/kf: This parameter is the ratio of thermal conductivities of the channel material and the fluid. The higher the ks value, the higher will be the effect due to axial conduction. The channel walls used in heat transfer experiments reported in literature include glass, stainless steel, sili ...
Convective Heat Transfer over a Wall Mounted Cube Using Large
... In this study, the commercial CFD software FLUENT 6.3 was used for simulation that based on finite volume method. Associated pre-processor GAMBIT 2.2 was used for the construction of the computational grid. FLUENT uses a control-volume-based technique to convert a general scalar transport equation t ...
... In this study, the commercial CFD software FLUENT 6.3 was used for simulation that based on finite volume method. Associated pre-processor GAMBIT 2.2 was used for the construction of the computational grid. FLUENT uses a control-volume-based technique to convert a general scalar transport equation t ...
Slide 1 - Educators Learn
... A hot compress is a soft pad applied over a body area. A hot soak involves putting a body part into water. A sitz bath involves immersing the perineal and rectal areas in warm water. A pack involves wrapping a body part with a wet or dry application. ...
... A hot compress is a soft pad applied over a body area. A hot soak involves putting a body part into water. A sitz bath involves immersing the perineal and rectal areas in warm water. A pack involves wrapping a body part with a wet or dry application. ...
thermodynamics - Sakshieducation.com
... It is defined as the amount of heat required to increase temperature of one gram of a gas through 1ºC at constant pressure. 2. Principal Specific Heat At Constant Volume (CV): It is defined as the amount of heat required to increase the temperature of one gram of gas through 1ºC at constant volume. ...
... It is defined as the amount of heat required to increase temperature of one gram of a gas through 1ºC at constant pressure. 2. Principal Specific Heat At Constant Volume (CV): It is defined as the amount of heat required to increase the temperature of one gram of gas through 1ºC at constant volume. ...
Heat And Thermodynamics
... Example : Gas enclosed in a cylinder fitted with a piston forms the thermodynamic system but the atmospheric air around the cylinder, movable piston, burner etc. are all the surroundings. Thermodynamic system may be of three types (i) Open system : It exchange both energy and matter with the surroun ...
... Example : Gas enclosed in a cylinder fitted with a piston forms the thermodynamic system but the atmospheric air around the cylinder, movable piston, burner etc. are all the surroundings. Thermodynamic system may be of three types (i) Open system : It exchange both energy and matter with the surroun ...
Two-phase friction factor in vertical downward flow in high
... quality, and as a result, pressure drop is decreased. Similar results were presented in [11–13]. Fig. 5 shows the relationship between total measured pressure drop and quality at the condensation temperature of 50 °C at various mass fluxes. At high vapour quality, the higher velocity of vapour flow ca ...
... quality, and as a result, pressure drop is decreased. Similar results were presented in [11–13]. Fig. 5 shows the relationship between total measured pressure drop and quality at the condensation temperature of 50 °C at various mass fluxes. At high vapour quality, the higher velocity of vapour flow ca ...
Dynamic insulation
Dynamic insulation is a form of insulation where cool outside air flowing through the thermal insulation in the envelope of a building will pick up heat from the insulation fibres. Buildings can be designed to exploit this to reduce the transmission heat loss (U-value) and to provide pre-warmed, draft free air to interior spaces. This is known as dynamic insulation since the U-value is no longer constant for a given wall or roof construction but varies with the speed of the air flowing through the insulation (climate adaptive building shell). Dynamic insulation is different from breathing walls. The positive aspects of dynamic insulation need to be weighed against the more conventional approach to building design which is to create an airtight envelope and provide appropriate ventilation using either natural ventilation or mechanical ventilation with heat recovery. The air-tight approach to building envelope design, unlike dynamic insulation, results in a building envelope that provides a consistent performance in terms of heat loss and risk of interstitial condensation that is independent of wind speed and direction. Under certain wind conditions a dynamically insulated building can have a higher heat transmission loss than an air-tight building with the same thickness of insulation.