Актуальные научные исследования в современном мире iscience. In. Ua

«MODERN SCIENTIFIC CHALLENGES AND TRENDS»
 
SCIENCECENTRUM.PL 
ISSUE 3 
ISBN 978-83-949403-3-1 
204
SECTION: TECHNICAL SCIENCE. 
TRANSPORT 
Avramenko Andrey
Department of Hydrogen Power Engineering,
A. M. Pidhirnyi Institute for Mechanical Engineering
Problems NAS of Ukraine 
(Kharkov,Ukraine) 
 
NUMERICAL SIMULATION OF THE PROCESS OF COMPOSITE FUEL 
TREATMENT IN A HYDRODYNAMIC CAVITATOR 
Abstract
. The results of numerical simulation of the processes of heat-and-
mass transfer in a hydrodynamic cavitator for treatment of composite motor fuel for 
transport engines are given. Considered was the process of the flow of composite 
fuel 
– a water-fuel emulsion comprising 95% of diesel fuel and 5% of water. 
Numerical methods were used to solve the problem in the three-dimensional non-
steady statement. Numerical simulation yielded the distribution of velocities of the 
water-fuel emulsion flow in the flow part of the hydrodynamic cavitator, and the 
intensity of hydrodynamic cavitation was assessed. Recommendations were 
suggested for the design parameters and operating conditions to ensure effective 
operation of the hydrodynamic cavitator in a system for maintaining the stability of a 
water-fuel emulsion. 
Keywords:
 composite fuel, transport engine, hydrodynamic cavitator, water-
fuel emulsion 
The increasing number of automobiles in big cities degrades drastically the 
environmental conditions and has an adverse effect on humans and the 
environment [1, 2]. This is especially true for diesel engine motor transport with 
exhaust gases containing no only toxic components 
– nitrogen oxides, unburned 
hydrocarbons, carbon monoxide, but also solid particles carrying carcinogenic and 
mutagenic agents [1-3]. The requirement to meet standard regulations for exhaust 
toxicity of motor transport engines results in the increasing of their cost and involved 
servicing. This calls for searching for alternative ways for improving the ecological 
indicators of transport engines. 
One of the promising methods is using composite fuel in transport engines, 
for instance, water-fuel emulsions. During combustion of a water-fuel, emulsion the 
maximum cycle temperature drops, with a positive effect on emission of nitrogen 
oxides. In addition, with partial replacement of diesel fuel with water (at small 
concentrations to 5%) and an effective method of managing the running cycle, the 
mass discharge of solids along with the diesel engine exhaust gases can be 
reduced. 
The challenge is to maintain the stability of the water-fuel emulsion to ensure 
effective running of transport diesel engines. 

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