scholarly journals MPMC and MCMD: Free High‐Performance Simulation Software for Atomistic Systems

2019 ◽  
Vol 2 (11) ◽  
pp. 1900113 ◽  
Author(s):  
Douglas M. Franz ◽  
Jonathan L. Belof ◽  
Keith McLaughlin ◽  
Christian R. Cioce ◽  
Brant Tudor ◽  
...  
Keyword(s):  
High Performance ◽  
Simulation Software ◽  
Performance Simulation ◽  
Atomistic Systems

scholarly journals Towards harmonizing the NFRC and CEN window performance simulation methods

2019 ◽  
Vol 46 (8) ◽  
pp. 687-703
Author(s):  
Peta-Gaye Ebanks ◽  
Russell Richman
Keyword(s):  
North American ◽  
High Performance ◽  
Simulation Software ◽  
Simulation Methods ◽  
Calculation Methods ◽  
Performance Simulation ◽  
European Committee ◽  
U Value ◽  
Performance Frame ◽  
Influential Parameters

Studies have found that the European Committee for Standardization (CEN) and National Fenestration Rating Council (NFRC) methods produce different U-values for the same window resulting in confusion when comparing products. A comparative evaluation of the NFRC and CEN U-value calculation methods was conducted for North American residential high-performance window products with focus on the most influential parameters in determining the whole window U-value for high-performance windows. Using two-dimensional conduction simulation software, four North American high-performance frame types with double, triple, and quad glazing combinations were simulated and calculated according to the NFRC and CEN standard methods. Overall, the trend showed that for the specific window combinations of this study, the higher the performance of the insulated glazing unit (IGU), the lesser the differences in the whole window U-value of both methods. The results showed an overall difference of 1 to 11% in whole window U-value when using the NFRC and CEN standards, lower than other studies. Generally, the NFRC standard resulted in the lower U-value for each case. Recommendations for harmonization of the two standards include aligning boundary conditions, frame cavity models, and material conductivities.

scholarly journals Numerical Evaluation of a HVAC System Based on a High-Performance Heat Transfer Fluid

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3298
Author(s):  
Gianpiero Colangelo ◽  
Brenda Raho ◽  
Marco Milanese ◽  
Arturo de Risi
Keyword(s):  
Heat Transfer ◽  
High Performance ◽  
Cooling System ◽  
Electrical Energy ◽  
Simulation Software ◽  
Heat Transfer Fluid ◽  
Hvac System ◽  
Dynamic Simulations ◽  
Heating And Cooling ◽  
The University

Nanofluids have great potential to improve the heat transfer properties of liquids, as demonstrated by recent studies. This paper presents a novel idea of utilizing nanofluid. It analyzes the performance of a HVAC (Heating Ventilation Air Conditioning) system using a high-performance heat transfer fluid (water-glycol nanofluid with nanoparticles of Al2O3), in the university campus of Lecce, Italy. The work describes the dynamic model of the building and its heating and cooling system, realized through the simulation software TRNSYS 17. The use of heat transfer fluid inseminated by nanoparticles in a real HVAC system is an innovative application that is difficult to find in the scientific literature so far. This work focuses on comparing the efficiency of the system working with a traditional water-glycol mixture with the same system that uses Al2O3-nanofluid. The results obtained by means of the dynamic simulations have confirmed what theoretically assumed, indicating the working conditions of the HVAC system that lead to lower operating costs and higher COP and EER, guaranteeing the optimal conditions of thermo-hygrometric comfort inside the building. Finally, the results showed that the use of a nanofluid based on water-glycol mixture and alumina increases the efficiency about 10% and at the same time reduces the electrical energy consumption of the HVAC system.

Based on Numerical Simulation of High-Performance Parallel Machine Muffler Experimental Calibration

2013 ◽  
Vol 718-720 ◽  
pp. 1645-1650
Author(s):  
Gen Yin Cheng ◽  
Sheng Chen Yu ◽  
Zhi Yong Wei ◽  
Shao Jie Chen ◽  
You Cheng
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Boundary Element ◽  
Message Passing ◽  
High Performance ◽  
Message Passing Interface ◽  
Parallel Machine ◽  
Simulation Software ◽  
Experimental Calibration ◽  
The Cost

Commonly used commercial simulation software SYSNOISE and ANSYS is run on a single machine (can not directly run on parallel machine) when use the finite element and boundary element to simulate muffler effect, and it will take more than ten days, sometimes even twenty days to work out an exact solution as the large amount of numerical simulation. Use a high performance parallel machine which was built by 32 commercial computers and transform the finite element and boundary element simulation software into a program that can running under the MPI (message passing interface) parallel environment in order to reduce the cost of numerical simulation. The relevant data worked out from the simulation experiment demonstrate that the result effect of the numerical simulation is well. And the computing speed of the high performance parallel machine is 25 ~ 30 times a microcomputer.

High-Performance Simulation of High-Beta Plasmas Using PIC Method

2020 ◽  
pp. 207-215
Author(s):  
Igor Chernykh ◽  
Vitaly Vshivkov ◽  
Galina Dudnikova ◽  
Tatyana Liseykina ◽  
Ekaterina Genrikh ◽  
...  
Keyword(s):  
High Performance ◽  
Performance Simulation ◽  
Pic Method ◽  
High Beta

scholarly journals Evaluating the use of straw bales in achieving passive house certification (PHIUS+ 2015) in western Canada

2021 ◽  
Author(s):  
Ashley Lubyk
Keyword(s):  
Carbon Footprint ◽  
High Performance ◽  
Climate Impact ◽  
Simulation Software ◽  
Embodied Energy ◽  
Single Family ◽  
Passive House ◽  
House Design ◽  
Straw Bale ◽  
Wall System

Achieving Passive House certification requires super insulation which can significantly raise the embodied energy and carbon footprint of a project, effectively front-end loading the climate impact, especially where petrochemical foam-based products are used. This research sought to evaluate the use of straw bales - a low embodied energy, carbon sequestering agricultural by-product - to achieve PHIUS+2015 certification. A straw bale wall system was adapted to a single-family detached reference house designed to meet the Passive House standard. The wall system was evaluated for applicability across three Western Canadian cities using WUFI Passive energy simulation software to evaluate compliance; thermal bridging and hygrothermal performance were also evaluated. It was found that the proposed straw bale wall assembly satisfied the PHIUS+ 2015 requirements in all three locations - Saskatoon, Calgary, and Kelowna - with only minor changes required to the reference house design. The annual heating demand and peak heating load, the two targets most sensitive to design changes, were, respectively, 4% and 8.6% below the target in Saskatoon, 63.1% and 21.3% below in Calgary, and 63.1% and 32.6% below in Kelowna. The research also revealed that maintaining a high degree of air tightness is essential for satisfying the requirements. Overall, this research demonstrates that straw bales can be a beneficial component in creating high performance enclosures without exacting a large embodied carbon footprint.

A high performance simulation methodology for multilevel grid-connected inverters

2012 ◽  
Vol 13 (7) ◽  
pp. 544-551 ◽  
Author(s):  
Lu-jun Wang ◽  
Tao Yang ◽  
Da-min Zhang ◽  
Zheng-yu Lu
Keyword(s):  
High Performance ◽  
Performance Simulation ◽  
Simulation Methodology
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