Navier--Stokes solutions of the flowfield in an internal combustion engine

Journal Article · Wed Dec 01 04:00:00 EST 1976 · AIAA (Am. Inst. Aeronaut. Astronaut.) J.; (United States)

DOI:https://doi.org/10.2514/3.61507· OSTI ID:5007459

Griffin, M D; Anderson, Jr, J D; Diwakar, R

The flowfield inside the cylinder of a reciprocating internal combustion engine is calculated by solving the complete Navier--Stokes equations by use of a time-dependent finite-difference technique. The main problem is to solve these equations, including multicomponent diffusion and finite-rate chemical reactions (for H-C-O-N chemistry), and obtain a complete solution for the velocity, pressure, temperature, and chemical composition of the flowfield throughout the four-stroke cycle of a piston-cylinder arrangement. At present, this total problem is a horrendous task, and its exact numerical solution will most likely be an evolutionary process over a long period. The flowfield between the top of the cylinder and the face of the piston is computed as a function of space and time as the piston moves through the conventional 4-stroke cycle, with the inlet and exhaust valves opening and closing appropriately. Combustion is not considered in detail. Solutions are obtained for 2-D geometry (infinite aspect ratio engine) and low Reynolds number.

• Research Organization: Univ. of Maryland, College Park
• OSTI ID: 5007459
• Journal Information: AIAA (Am. Inst. Aeronaut. Astronaut.) J.; (United States), Journal Name: AIAA (Am. Inst. Aeronaut. Astronaut.) J.; (United States) Vol. 14:12; ISSN AIAJA
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
CONTROL EQUIPMENT
CYLINDERS
DIFFERENTIAL EQUATIONS
DISTRIBUTION
ENGINES
EQUATIONS
EQUIPMENT
FINITE DIFFERENCE METHOD
FLOW MODELS
FLOW REGULATORS
FLUID FLOW
GAS FLOW
INTERNAL COMBUSTION ENGINES
ITERATIVE METHODS
MATHEMATICAL MODELS
NAVIER-STOKES EQUATION
NUMERICAL SOLUTION
PISTONS
REYNOLDS NUMBER
SPATIAL DISTRIBUTION
TIME DEPENDENCE
TWO-DIMENSIONAL CALCULATIONS
VALVES