Numerical Analysis Group (NAG)

Our Numerical Analysis Group develop mathematical models, advanced computational algorithms and high-performance software for the design and analysis of complex systems in engineering. Our highly skilled staff help contribute to advances in modelling and simulation based engineering. Current focus of this research group lies in the intersection of building energy modelling, non-linear (black box) optimisation, integration of artificial intelligence for demand forecasting, structural lightweighting and process engineering applications. Our goals are high-performance, multi-scale modelling for the high-fidelity analysis of multi-physics problems, high-order methods, uncertainty quantification, and efficient model-order reduction for large scale applications such as design and active control.

(Eco) Building energy modelling

There is clearly a growing demand for modelling of the complex energy flow behaviour from within and out of buildings - taking into account component specifics such as HVAC and the corresponding weather data. To this end, we provide EnergyPlus models which take into account the holistic building characteristics. We help with solving building design problems, demonstrate compliance with regional regulations, investigate poor energy performance or help you generate an Energy Performance Certificate. Our team specialises in advise on energy-related issues in individual public or commercial buildings. We have extensive experience in developing and simulating via a range of energy modelling tools (commercial, in-house or open source) and are capable of providing optimum solutions via optimisations - thus, matching the client's need with the specific solution.

Data center energy modelling

Data Centres house the computer systems that are the UK’s digital workhouse and the backbone of the internet. The Data Centre industry is currently enjoying explosive growth due to the insatiable demand for digital services and the rapid emergence of cloud computing. Governments, NGOs, industry and environmentalists are increasingly concerned about the environmental impact and economic cost of data centre operation, which present a serious risk to the UK meetings its emissions targets.

We predominantly concentrate on the modelling of energy within these data centers. Since data centres are highly multi-disciplinary, it is vital that their energy efficiency is analysed as an integrated system. Further, Data Centres generate enormous quantities of waste heat that must be cooled in order to guarantee the reliability and operating lifetime of the electronic equipment. We have developed accurate Computational Fluid Dynamics-based models of air-cooled Data Centres and have developed new modelling approaches which enable air-cooling to be addressed in a coupled manner over the server, rack to whole data centre length-scales.

Lightweighting simulations

Vehicle lightweighting is a key R&D activity around the development of new materials and computational simulations of vehicle behaviours such as crash, NVH and durability. For example, each 100kg of mass reduction can save the environment around 8g/km of CO2. In addition to this, escalating legislation has proved to be a major driver of materials innovation in the automotive sector. Calculus Energy posses expertise in finite element and boundary element solutions applied to all aspects of lightweighting simulations.

At its core, we provide research and consultancy utilising a broad range of commercial FE/BE/Spectral codes, in addition to development of in-house mesh and meshless code, which enables new material models/code improvements to be directly implemented. Some examples of our work include the development and implementation of new elements and novel contact algorithms, development of improved or new constitutive and damage models for transient and static analysis (carbon fiber), optimisation of large structures with 1000's of design variables (black box optimization, surrogates) and the efficient implementation of models in computer codes, including as user material models in commercially available codes such as ANSYS and ABAQUS. Clients in this sector are predominantly tend to come from automotive, motorsports and aerospace OEMs. We have also been involved in research projects carrying out finite element analysis for the biomed industry.

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