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Effect of elbow-distorted inflow on a fluid actuator

A CFD variant study assessed how an upstream elbow changed inlet profile, internal flow and the resulting hydraulic action of a fluid actuator.

Comparison of anonymized secondary-flow structures upstream of a fluid actuator
Automotive · CFD simulation
Industry
Automotive
Services
CFD simulation
Evidence boundary
Anonymized internal project documentation

Engineering question

The actuator could not be judged with ideal uniform inflow when the real line introduced swirl and asymmetric velocity profiles.

Model & approach

  • Compare idealized and elbow-distorted inflow with the same actuator geometry
  • Evaluate pressure field, secondary flow and resulting fluid forces together

Boundary conditions

  • Several inlet distances or arrangements
  • Same actuator with systematically varied upstream flow

Results of the assessment

  • The elbow produced an asymmetric profile that persisted into the active region of the actuator.
  • Inlet spacing and orientation governed departure from idealized component behaviour.

Engineering consequence

The assessment supported definition of line connection and a defensible inlet model boundary.

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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