FLACS (FLame ACceleration Simulator) is a commercial

Computational Fluid Dynamics Computational fluid dynamics (CFD) is a branch of fluid mechanics that uses numerical analysis and data structures to analyze and solve problems that involve fluid dynamics, fluid flows. Computers are used to perform the calculations required ...

(CFD) software used extensively for

explosion An explosion is a rapid expansion in volume of a given amount of matter associated with an extreme outward release of energy, usually with the generation of high temperatures and release of high-pressure gases. Explosions may also be generated ...

modeling and

atmospheric dispersion modeling Atmospheric dispersion modeling is the mathematical simulation of how air pollutants disperse in the ambient atmosphere. It is performed with computer programs that include algorithms to solve the mathematical equations that govern the polluta ...

within the field of industrial safety and

risk assessment Risk assessment is a process for identifying hazards, potential (future) events which may negatively impact on individuals, assets, and/or the environment because of those hazards, their likelihood and consequences, and actions which can mitigate ...

. Main application areas of FLACS are in

petrochemical Petrochemicals (sometimes abbreviated as petchems) are the chemical products obtained from petroleum by refining. Some chemical compounds made from petroleum are also obtained from other fossil fuels, such as coal or natural gas, or renewable s ...

process manufacturing Process manufacturing is a branch of manufacturing that is associated with formulas and manufacturing recipes,

food processing Food processing is the transformation of agricultural products into food, or of one form of food into other forms. Food processing takes many forms, from grinding grain into raw flour, home cooking, and complex industrial methods used in the mak ...

wood processing Wood processing is an engineering discipline in the wood industry comprising the production of forest products, such as pulp and paper, construction materials, and tall oil. Paper engineering is a subfield of wood processing. The major wo ...

, metallurgical, and

nuclear safety Nuclear safety is defined by the International Atomic Energy Agency (IAEA) as "The achievement of proper operating conditions, prevention of accidents or mitigation of accident consequences, resulting in protection of workers, the public and the ...

industries. FLACS has dedicated modules to simulate

gas explosion A gas explosion is the Combustion, ignition of a mixture of air and flammable gas, typically from a gas leak. In household accidents, the principal explosive gases are those used for heating or cooking purposes such as natural gas, methane, propan ...

dust explosion A dust explosion is the rapid combustion of fine particles suspended in the air within an enclosed location. Dust explosions can occur where any dispersed powdered combustible material is present in high-enough concentrations in the atmosphere ...

and explosions involving chemical explosives like

TNT Troponin T (shortened TnT or TropT) is a part of the troponin complex, which are proteins integral to the contraction of skeletal and heart muscles. They are expressed in skeletal and cardiac myocytes. Troponin T binds to tropomyosin and helps ...

. FLACS is also extensively used to simulate flammable and toxic gas dispersion. It was applied in the investigation of many high profile accidents such as

Buncefield fire The Buncefield fire was a major fire at an oil storage facility that started at 06:01 UTC on Sunday 11 December 2005 at the Hertfordshire Oil Storage Terminal, located near the M1 motorway, Hemel Hempstead, in Hertfordshire, England. The ter ...

Piper Alpha Piper Alpha was an oil platform located in the North Sea about north-east of Aberdeen, Scotland. It was operated by Occidental Petroleum, Occidental Petroleum (Caledonia) Limited (OPCAL) and began production in December 1976, initially as an oi ...

TWA Flight 800 Trans World Airlines Flight 800 (known as TW800 or TWA800) was a regularly scheduled international passenger flight from John F. Kennedy International Airport in New York City, United States, to Fiumicino Airport in Rome, Italy, with a stopo ...

,Sandia report on modeling TWA-800 tank explosio

/ref> and the

Petrobras 36 '' 36'' (''P-36'') was a semi-submersible oil platform. Prior to its sinking on 20 March 2001, it was the largest in the world. It was operated by Petrobras, a semi-public Brazilian oil company headquartered in Rio de Janeiro. The proximate cau ...

platform.

History

FLACS software development started in-house in the early 1980s under the sponsorship program, Gas Explosion Safety (GSP), funded by the oil companies BP,

Elf Aquitaine Elf Aquitaine is a French brand of oils and other motor products (such as brake fluids) for automobiles and trucks. Elf is a former petroleum company which merged with TotalFina to form "TotalFinaElf". The new company changed its name to Total ...

Esso Esso () is a trading name for ExxonMobil. Originally, the name was primarily used by its predecessor Standard Oil of New Jersey after the breakup of the original Standard Oil company in 1911. The company adopted the name "Esso" (from the phon ...

Mobil Mobil Oil Corporation, now known as just Mobil, is a petroleum brand owned and operated by American oil and gas corporation ExxonMobil, formerly known as Exxon, which took its current name after history of ExxonMobil#merger, it and Mobil merge ...

Norsk Hydro Norsk Hydro ASA (often referred to as just ''Hydro'') is a Norway, Norwegian aluminium and renewable energy company, headquartered in Oslo. It is one of the largest aluminium companies worldwide. It has operations in some 50 countries around th ...

and

Statoil Equinor ASA (formerly Statoil and StatoilHydro) is a Norwegian multinational energy company headquartered in Stavanger, Norway. It is primarily a petroleum company operating in 36 countries with additional investments in renewable energy. In th ...

. FLACS-86 was released to GSP sponsors in 1986. Continuous research and development from then onwards resulted in many commercial releases. In 2006, FLACS v8.1 was released to customers. Till then FLACS was developed for

Unix Unix (, ; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 at the Bell Labs research center by Ken Thompson, Dennis Ritchie, a ...

and

Linux Linux ( ) is a family of open source Unix-like operating systems based on the Linux kernel, an kernel (operating system), operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically package manager, pac ...

platforms. In 2008, however, FLACS v9.0 was released for

Microsoft Windows Windows is a Product lining, product line of Proprietary software, proprietary graphical user interface, graphical operating systems developed and marketed by Microsoft. It is grouped into families and subfamilies that cater to particular sec ...

platform. FLACS v9.1 and FLACS-Wind was developed in 2010. A fully parallelized FLACSv10.0 (using

OpenMP OpenMP is an application programming interface (API) that supports multi-platform shared-memory multiprocessing programming in C, C++, and Fortran, on many platforms, instruction-set architectures and operating systems, including Solaris, ...

) with a new solver for incompressible flows was released in 2012. FLACSv10.0 also constitutes a Homogeneous Equilibrium Model (HEM) for

two-phase flow In fluid mechanics, two-phase flow is a flow of gas and liquid — a particular example of multiphase flow. Two-phase flow can occur in various forms, such as flows transitioning from pure liquid to vapor as a result of external heating, sep ...

calculations.

Related software

* CFX (proprietary software) *

Fire Dynamics Simulator Fire Dynamics Simulator (FDS) is a computational fluid dynamics (CFD) model of fire-driven fluid flow. The computer program solves numerically a large eddy simulation form of the Navier–Stokes equations appropriate for low-speed, thermally-driv ...

(GPL) *

OpenFOAM OpenFOAM (Open Field Operation And Manipulation) is a C++ toolbox for the development of customized numerical solvers, and pre-/post-processing utilities for the solution of continuum mechanics problems, most prominently including computation ...

(GPL) * KFX DNV GL

References

{{reflist

External links

FLACS official website

GexCon AS
(FLACS developers) Computational fluid dynamics

History

Related software

See also

References

External links