Project case / Customer-independent

Cooling-system retrofit after reversing fan flow

A CFD variant study reassessed a cooling system after changing fan direction and linked operating point, enclosure openings and local turning losses.

Two anonymized CFD flow fields for opposite fan-flow directions
Off-highway · CFD simulation · Thermal analysis
Industry
Off-highway
Services
CFD simulation · Thermal analysis
Evidence boundary
Anonymized internal project documentation

Engineering question

Reversing the functional air path changed not only velocity direction but also approach flow, system resistance and loading of nearby components.

Model & approach

  • Compare suction and pressure fan arrangements in the complete installation space
  • Assess opening and enclosure variants through flow path, pressure demand and local approach flow

Boundary conditions

  • Same cooling components with reversed fan direction
  • Several enclosure and opening concepts for the retrofit

Results of the assessment

  • Direct impingement on solid installations introduced additional turning losses.
  • Revised openings provided a clearer path for the changed system function.

Engineering consequence

The study focused retrofit development on enclosure openings, approach flow and the newly relevant fan operating point.

Context

This page summarizes internal project documentation independently of the customer. Absolute values, confidential geometry and independent physical validation are not published.

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