Computational fluid dynamics simulation of a single cylinder research engine working with biodiesel

Abstract

The main objective of the paper is to present the results of the CFD simulation of a DI single cylinder engine using diesel, biodiesel, or different mixture proportions of diesel and biodiesel and compare the results to a test bed measurement in the same functioning point. The engine used for verifying the results of the simulation is a single cylinder research engine from AVL with an open ECU, so that the injection timings and quantities can be controlled and analyzed. In Romania, until the year 2020 all the fuel stations are obliged to have mixtures of at least 10% biodiesel in diesel [14]. The main advantages using mixtures of biofuels in diesel are: the fact that biodiesel is not harmful to the environment; in order to use biodiesel in your engine no modifications are required; the price of biodiesel is smaller than diesel and also if we compare biodiesel production to the classic petroleum based diesel production, it is more energy efficient; biodiesel assures more lubrication to the engine so the life of the engine is increased; biodiesel is a sustainable fuel; using biodiesel helps maintain the environment and it keeps the people more healthy [1-3]

Influences of diesel pilot injection on ethanol autoignition - a numerical analysis

“…The sector simulation model is based on a single cylinder research engine (SCRE) AVL 5402 with the following characteristics: Following the development of the simulation model an extensive validation for diesel and a blend of diesel and ethanol was done for different speeds and loads, which is presented in [1]. To improve accuracy of the input data a more detailed simulation model was also used [16,17]. The experimental data required for the testing was gathered using the equipment in the Laboratory of research, testing and homologation of internal combustion engines (TESTECOCEL) of the Department of Automotive and Transport within the Technical University of Cluj-Napoca [18].…”

Separate direct injection of diesel and ethanol: A numerical analysis

“…As a first step, simulations were performed on a model with complete intake and combustion chamber geometry, fig. 1, described in [22]. Due to the high computational costs (approx.…”

Continuous nanofiber yarns twisted through three-dimensional high-speed swirling airflow

“…R is the gas constant. The standard k-ε turbulence model was set based on the consideration of turbulent flow of the fluid, applicability, accuracy, and simplicity [7]. An unstructured mesh was used to mesh the entire region and the structure of the nozzle twisting device was simplified in order to reduce meshing time.…”