IIART

                 International Institute of Applied Research and Technology



CompView (technology for the model
create and control)



Overview

The technological scheme creation, edition and modeling on big volume of real data in offline and online modes. It was created on Visual C++ 4,5,6 versions.

Technology description

This is full closed and ready‐made programming technological cycle of scheme edition and dynamical data visualization in real‐time mode. A lot of properties for each scheme object are using.

Object Editor

The powerful build‐in editor of objects permits the almost of all modern existed editing features.

Wide area of applications:

For car building technology For energy-economy analysis of energy consumption

The technology permits:

To visualize and compute of huge volume of data (more then 100 billions of values in several formats) with high performance. The special computing methods are using to improve performance;

To zoom the data through computing zooming The selective visualization of data with special statistic methods

PageView project

To do the special recompile of data; to make the reverse data depends; to do the flexible tuning to data formats. To use a lot of data formats such as ODBC, DAO, ADO, XML and more; to make multi‐channel data access.

Computational FD/H&MT:models, methods, and software

Application software is a powerful forecasting system:
  • object‐oriented(to users)
  • with a graphical user interface (GUI)
  • with modern mathematical models
  • with approved reference information databases
Application software examples
Problems Software
Fluid dynamics, Heat & Mass Transfer AnsysFluent, OpenFoam, Code Saturn, IES VE
Energy Saving IES VE, Energy Plus, ESP‐r, VABI Elements
Engineering Equipment Design MatLAB Simulink, TRNSYS, IES VE, Energy Plus
Acoustics DIRAC, Ansys Fluent
Heat&MassTransfer in Solids, Structural Mechanics Comsol, BSim, Delphin5, HAMLab

Computational FD/H&MT:our solved tasks


Bus aerodynamics simulation
  • 3D problem using the CAD modelclose to a real bus
  • Steady RANS equations,SST–k–ω turbulence model,upwind scheme,SIMPLEС algorithm
  • Used software: AnsysFluent14.5
Pressure distribution
Fp, N Ff, N Fx, N Cp Cn Cx
Rear wheels 69.70 3.75 73.45 0.024 0.0013 0.0253
Front wheels 9.10 2.00 11.10 0.003 0.0007 0.0037
Bus surface 1058.4 86.3 1144.7 0.361 0.0294 0.3904
Total 1137.20 92.05 1229.25 0.3880 0.0314 0.4194
Pressure forceFp, friction force Ff, total force FX, pressure coefficient Сp, friction coefficient Сf, and total coefficient СX at a velocityof 90 km/hr

Bus aerodynamics simulation
  • 3D problem using the CAD modelclose to a real truck
  • Steady RANS equations,SST–k–ω turbulence model,upwind scheme,SIMPLEС algorithm
  • Used software: AnsysFluent14.5
Aerodynamic drag force and drag coefficient of serial and new truck cabins
Ft, N Сt
Serialcabin (S=8.642 m2) 499.5 0.151
New cabin (S=8.642 m2) 531.4 0.163


Aerodynamic forces for new cabin
cabin element Fp, N Ff, N Fx, N Cp Cn Cx
deflector ‐37.5 0.4 ‐37.1 ‐0.0108 0.00012 ‐0.0107
radiator grille 227.3 0 227.3 0.0663 0 0.0663
rearview mirrors 59.6 1.2 60.8 0.017 0.00035 0.0173
bumper 267.1 1.7 268.8 0.0779 0.00049 0.0784
total cabin 684.8 19.0 703.8 0.1997 0.00553 0.205
Pressure distribution at the front surface of serial and new cabins (w/o and with rearview mirrors)

Truck aerodynamics simulation: rear flap influence

Rear flaps decrease a truck drag by 6.4%

Fp, N Ff, N Fx, N Cp Cn Cx
Truck w/o flaps(S=10.62 m2) 2337.6 127.2 2464.8 0.575 0.031 0.606
Truck with flaps(S=10.81 m2) 2215.1 133.3 2348.4 0.535 0.032 0.567

Pressure distribution
and streamlines


Heating a truck body by exhaust gases
  1. Conjugate problem of heat transfer from exhaust gases to the truck body surface
  2. Used software: AnsysFluent 14.5
Input gas temperature–713K, Gas flowrate–1700kg/hr. Gas temperature at the heating system exit of an empty truck body–300 ° C; Pressure drop–30 kPa; Mechanical power loss –19.2kW