Scientific Computing is an umbrella term covering the use of computers in science. The use of computers in science has increased dramatically in the last decade, to the point where virtually all disciplines are using computers as an integral part of the research process.
To use scientific computing efficiently for your research you need access to relevant computing resources and software that fits the problem. More generally, you can say that you need both access to computational resources and a knowledge of the computational methods relevant to the domain.
If you already have a clear understanding of your computing needs, and you are just seeking access to computational resources, start by looking at the Scientific Computing Services.
If you need help to navigate the available options or a special solution, you should contact the Scientific Computing Consultancy. The Scientific Computing Consultancy will contact you to work out the best solution for your specific problem.