1D CFD system simulation of heat and mass transfer

from Wikipedia, the free encyclopedia

One-dimensional (1D) CFD system simulation is a method in numerical fluid mechanics ( English computational fluid dynamics, CFD ). It is used to determine fluidic and thermal variables, such as pressures , pressure losses , mass flows , temperatures and heat transfers for the connected elements of complex fluidic and thermal systems and plants. The simulation can be stationary and / or non-stationary (time-dependent) depending on the program and problem . For this purpose, the corresponding conservation equations ( Navier-Stokes equations , conservation of energy ) are solved. The use of concentrated elements, which are connected to a flow network, enables the modeling of relatively large networks and systems with minimal computing times. Wall friction, heat transfer and machine characteristics are taken into account using characteristic curves. Such programs are often coupled with external system simulation models or with three-dimensional numerical models (e.g. 3D CFD) in order to develop efficient hybrid numerical models that have all the advantages - i.e. the accuracy of 3D processes and the efficiency of 1D processes - unite.

One program for 1D CFD system simulation is Flownex SE.

Bibliography

  • GP Greyvenstein, An implicit method for the analysis of transient flows in pipe networks, https://flownex.com/fnxdocs/journalarticles/007.pdf
  • GP Greyvenstein, DP Laurie: A segregated CFD approach to pipe network analysis, November 15, 1994
  • GP Greyvenstein, HJ van Antwerpen, PG Rousseau: The system CFD approach applied to a pebble bed reactor core
  • GP Greyvenstein (Prof., FNEmslie (Mr.)): Modeling of the PBMR Using a Pipe Network Analysis Approach
  • Wang Hai, Liu Xiaojing, Zhou Weiguo; Transient flow simulation of municipal gas pipelines and networks using semi implicit finite volume method, 2011 SREE Conference on Engineering Modeling and Simulation