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Cooling concept during early machine development

Airflow, pressure loss and hot-air recirculation were assessed before a prototype of the enclosed machine was built.

CFD temperature field in an enclosed machine compartment
Off-highway · CFD simulation · Thermal analysis
Industry
Off-highway
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CFD simulation · Thermal analysis
Evidence boundary
Anonymized project narrative

Engineering question

The cooling concept for a new machine needed an early check for poor airflow paths, excessive resistance and possible hot-air recirculation.

Model & approach

  • Model the engine, hydraulics, fan, coolers, openings and enclosure
  • Calculate velocity, pressure and temperature for the intended operating conditions
  • Vary opening placement, airflow path and cooling-component selection

Boundary conditions

  • Assessment during conceptual design
  • Heat sources and component characteristics from available development data
  • Enclosed installation with defined air inlets and outlets

Results of the assessment

  • The initial arrangement promoted disrupted flow and increased pressure loss.
  • Warm discharge air could return to the region upstream of the cooler.
  • Opening position and area strongly influenced the supply to the cooling components.

Additional project view

CFD temperature field for another early machine configuration
Consolidated development stage with the complete machine environment

Engineering consequence

The next design stage focused on revised openings, a more direct airflow route and coordinated fan and cooler selection.

Context

The consolidated project accounts contain no complete load table or final physical-test result.

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