This presentation was made at the 2019 NAFEMS World Congress in Quebec Canada
Diamond Light Source is the UK’s national synchrotron. It works like a giant microscope, harnessing the power of electrons to produce bright light, the synchrotron X-ray that scientists can use to study anything from fossils to jet engines to viruses and vaccines. The machine accelerates electrons to near light speeds so that they give off light 10 billion times brighter than the sun. These bright beams are then directed off into laboratories known as ‘beamlines’ where, scientists use the light to study a vast range of subject matter, from new medicines and treatments for disease to innovative engineering and cutting-edge technology. Diamond is one of the most advanced scientific facilities in the world, and its pioneering capabilities are helping to keep the UK at the forefront of scientific research. The synchrotron X-ray is 10,000 times more powerful than a traditional microscope. In order to select light at required energy level and to channel it from the source to samples in each beamlines design engineers employ series mirrors and heat absorbers that are cooled by water or cryogenic fluids. Structural-thermal analysis is applied to mirrors and absorbers to obtain temperature and thermal stresses and validate they are under allowed limits. In general, structural-thermal analysis can produce quite good results in mirrors and absorbers in which the temperature in cooling fluids are assumed to be the same as the temperature on the surface of cooling channels. In reality, temperature in the cooling agents is quite different, therefore multi-physics coupling analysis is required, which will involve complicated CFD analysis. Fortunately, in our cases, the pressure and speed of fluid in the cooling channels are well specified and only temperature is unknown. Therefore it is ideal situation to introduce thermal fluid elements to the system of numerical simulation to predict the temperature of cooling fluid without involving unnecessary complexity.
|Date||18th June 2019|
|Organisation||Diamond Light Source Ltd|
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