Search Results - subject:"Finite element simulations"

Temperature distribution in a field of long Borehole Heat Exchangers (BHEs) subjected to a monthly averaged heat flux

Zanchini, E.; Lazzari, S. - In: Energy 59 (2013) C, pp. 570-580

uniform and constant heat load) is determined by finite-element simulations and written in polynomial form through accurate …

Persistent link: https://www.econbiz.de/10011055017

Long-term performance of large borehole heat exchanger fields with unbalanced seasonal loads and groundwater flow

Zanchini, Enzo; Lazzari, Stefano; Priarone, Antonella - In: Energy 38 (2012) 1, pp. 66-77

unbalanced winter and summer loads are studied, in a dimensionless form, by finite-element simulations implemented through COMSOL …

Persistent link: https://www.econbiz.de/10011054634

Improving the thermal performance of coaxial borehole heat exchangers

Zanchini, E.; Lazzari, S.; Priarone, A. - In: Energy 35 (2010) 2, pp. 657-666

constituent materials and of the geometrical configuration of the CBHE cross section. The analysis is performed by means of finite-element … simulations, implemented through the software package COMSOL Multiphysics. The real 2-D axisymmetric unsteady heat transfer …

Persistent link: https://www.econbiz.de/10010810547

Effects of flow direction and thermal short-circuiting on the performance of small coaxial ground heat exchangers

Zanchini, E.; Lazzari, S.; Priarone, A. - In: Renewable Energy 35 (2010) 6, pp. 1255-1265

exchangers, currently used in Northern Italy, are studied by finite-element simulations, performed through the software package …

Persistent link: https://www.econbiz.de/10011045476

Long-term performance of BHE (borehole heat exchanger) fields with negligible groundwater movement

Lazzari, Stefano; Priarone, Antonella; Zanchini, Enzo - In: Energy 35 (2010) 12, pp. 4966-4974

The long-term performance of double U-tube BHE (borehole heat exchanger) fields is investigated by finite element … simulations, performed through the software package COMSOL Multiphysics (©COMSOL, Inc.), for grounds in which the effects of …

Persistent link: https://www.econbiz.de/10011054472

Finite element simulations using symbolic computing

Amberg, Gustav; Tönhardt, Robert; Winkler, Christian - In: Mathematics and Computers in Simulation (MATCOM) 49 (1999) 4, pp. 257-274

In our work on modelling of phase change, fluid flow and heat transfer in materials processes, it is crucial to have complete control of the mathematical models, and the numerical simulation of the models. We have developed a toolbox in Maple which can be used to generate complete finite element...

Persistent link: https://www.econbiz.de/10011050309