A5037803704- Hydraulic and Pneumatic Systems
- Refrigeration and Air Conditioning Technologies
- Advanced Sensor Technologies Research
- Tribology and Lubrication Engineering
- Advanced Manufacturing and Logistics Optimization
- Iterative Learning Control Systems
- Combustion and Detonation Processes
- Infection Control and Ventilation
- Indoor Air Quality and Microbial Exposure
- Wind and Air Flow Studies
- Vibration and Dynamic Analysis
- Fluid Dynamics and Vibration Analysis
Universitat Politècnica de Catalunya
2012-2025
Recently several works have been published on numerical simulation of an external gear pump (EGP). Such kinds pumps are simple and relatively inexpensive, frequently used in fluid power applications, such as aeronautical, mechanical, civil engineering. Nevertheless, considerable effort is being undertaken to improve efficiency reduce noise vibration produced by the flow pressure pulsations. Numerical EGP not straightforward principally for two main reasons. First, gearing mechanism between...
This paper presents and discusses the results of “2024 International Computational Fluid Dynamics Challenge on long-range indoor dispersion pathogen-laden aerosols” aimed at assessing ability different computational codes turbulence models to reproduce particles produced by a turbulent natural convection flow enclosed in room sized cubical cavity. A total 12 research groups from ten countries have conducted 15 simulations same configuration solving Reynolds averaged Navier–Stokes (RANS)...
This work presents a study on the calculation of transmittance in an Air Handling Unit (AHU) through three methods: theoretical estimation, experimental approach and numerical simulations. First, estimation based simplified models heat mass transfer AHU was employed. In addition, tests were carried out real under controlled conditions, obtaining temperature measurements inside outside unit. These data used to calculate using predefined formulas. Finally, simulations performed specific...
This work presents a study on the calculation of transmittance in an air handling unit (AHU) through three methods. A semi-empirical estimation based simplified models heat and mass transfer has been used. In addition, experimental tests were carried out real AHU under controlled conditions. The measured temperature inside outside used to calculate transmittance. Finally, numerical simulations performed specific sections global model, with without radiation. provided detailed results flow...
As trochoidal-gear pump specifications become more demanding and design cycles shorter, the use of an innovative tool for modeling simulation can be a cost effective valuable guide to experimental work. The existing methodologies software fail thoroughly address by taking into account real effects maximize efficiency reduce flow fluctuation. Two new modules are added structured methodology GeroLAB: minimum clearance module, teeth related leakage phenomenon, relief groove port area sharp rims...
This review paper provides an overview of recent advances in computational fluid dynamics (CFD) simulations ejector pumps for vacuum generation. It examines various turbulence models, multiphase flow approaches, and numerical techniques employed to capture complex phenomena like shock waves, mixing, phase transitions, heat/mass transfer. Emphasis is placed on the comprehensive assessment characteristics within ejectors, including condensation effects such as nucleation, droplet growth,...
Trochoidal gear pumps produce significant flow pulsations that result in pressure pulsations, which interact with the system where they are connected, shortening life of both pump and circuit components. The complicated aspects operation a gerotor make computational fluid dynamics proper tool for modelling simulating its characteristics. A three-dimensional model deforming mesh is presented, including effects manufacturing tolerance leakage inside pump. new boundary condition created...