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Die Shape Selection for Forming (Square Pasta)

Calculation of die aperture dimensions for square extrudates, accounting for die swell, and validating flow regime and pressure drop.

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1. Define Input Parameters

2. Engineering Output

Die Aperture Side Length (a_die)
- mm
Hydraulic Diameter (Dh)
- m
Reynolds Number (Re)
- dimensionless
Friction Factor (f)
- dimensionless
Pressure Drop (dP)
- bar

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Context & Assumptions

In food process engineering, extruding viscoelastic materials like pasta dough requires compensating for die swell to achieve target dimensions. This calculation determines the necessary die aperture size while ensuring the process remains within laminar flow and equipment pressure limits.

Understand the Engineering Principles

Review the step-by-step derivations, typical industrial limits, and scale-up rules.

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