The thermal analysis software parameters are determined by the type of fluid convection such as natural, mixed or forced convection. Some of the areas in which it can be used are heat sink design, electronics cooling , heat exchangers, automotive thermal management, nuclear reactors, and beer brewing. Conduction refers to a heat transfer between substances that are in direct contact with each other. In theory, heat energy passes from the hot to the cold end of the substance and is directly related to the conductivity of the material.
The SimScale thermal simulation software offers a module for various types of applications where heat and energy are significant study parameters. You can simulate conduction between different materials and can also model temperature-dependent conductivity. Examples include car brakes , heat sinks , aluminum casing , worm gearboxes , and more. Convection also known as convective heat transfer refers to the transfer of heat between two areas, through the movement of fluids.
Common in liquids and gases, it occurs when fluid molecules absorb heat and change density, leading to convection currents. The applications of convection are numerous and include LED heat sinks, light bulbs, electronics cooling , refrigerators or indoor cooling. Radiative heat transfer, or radiation is the transfer of heat through electromagnetic waves.
In product design, radiation usually starts to play a role in high temperatures. A well-heated part releases its energy to the ambient environment in form of a radiative heat tranfer.
The emissivity value depends on the surface type. Various ways of displaying and interpreting results are possible, ranging from simple 2d plots to fully-featured 3d views. The thermal conduction solver offers all features necessary for modelling highly complex cases of thermal conduction:.
For prescribing convective heat transfer, analytical models are available as well as direct user-input to apply heat transfer coefficients, fluid velocities or temperature value for each element individually. Special entities called 'Ventilation', 'Volumes' and 'Airzones' can be used to model ventilation systems and regions of air flow such as vehicle cabins.
The overall spectrum of thermal radiation is separated into two bands, the so-called short-wave and long-wave radiation ranges. The short-wave range includes all wavelengths below the ultraviolet spectrum, the entire spectrum of visible light and higher-frequency parts of the infrared spectrum. This is the typical domain of energy sources dominated by radiative energy exchange, including solar energy, domestic light sources and infrared radiators. This kind of radiation exchange usually takes place in a highly directional manner.
Within the radiation solver, material parameters and interaction effects such as specular and diffuse reflection, transmission and absorption can be treated in a physically correct manner as a function of wavelength. Major effects covered by the short-wave radiation solver include:. The long-wave range is used to model intra-model thermal radiation energy exchange based on the current part temperature.
Depending on the temperature, this type of thermal radiation can reach into the visible spectrum but is usually maximal in the non-visible, deep infrared range. The well temperature is given by the measurement and the formation temperature is the Geotherm. However, when water is injected in the formation, the Geotherm will be affected and modified, especially close to the wellbore. An appropriate Geotherm will need to be determined in order to perform a Temperature Modeling.
Even if a large number of traces is accumulated over time, DTS sums up to one measurement : Temperature. One measurement can solve a problem with one phase. For each additional phase an additional measurement will be necessary. Where The Answer Matters! Schmidt, G. Ruedy, J. Hansen, I. Aleinov, N. Bell, M. Bauer, S. Bauer, B. Cairns, V. Canuto, Y. Cheng, A.
Del Genio, G. Faluvegi, A. Friend, T. Hall, Y. Hu, M. Kelley, N. Kiang, D. Koch, A. Lacis, J. Lerner, K. Lo, R. Miller, L. Nazarenko, V. Oinas, J. Perlwitz, Ju. Perlwitz, D. Rind, A. Romanou, G. Russell, Mki. Sato, D. Shindell, P.
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