expansion ratio


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expansion ratio

[ik′span·shən ‚rā·shō]
(fluid mechanics)
For the calculation of the mass flow of a gas out of a nozzle or other expanding duct, the ratio of the nozzle exit section area to the nozzle throat area, or the ratio of final to initial volume.
(mechanical engineering)
In a reciprocating piston engine, the ratio of cylinder volume with piston at bottom dead center to cylinder volume with piston at top dead center.
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Tenders are invited for Set Of Silicon Rubber Coated Sibru Glass Braided Sleeve Permacel Permagrip P,985 Non Inghitable Self Expandable With Expansion Ratio 1:2.
A high expansion ratio is needed to reduce the thickness of the cell wall and to enhance its cell-opening.
The scientists optimized the formulation based on what they thought would be desirable physical attributes for an RTE snack, including its expansion ratio, bulk density and hardness.
Tenders are invited for Set Of Silicon Rubber Sibru Glass Braided Sleeve Permacel Permagrip P,985 Non Inghitable Self Expandable With Expansion Ratio 1:2.
The other objective is to investigate the effect of long-chain branching on the foamability of the modified PP by a one-step compression--molding process, and the studies focuses on the cell density, expansion ratio, and cellular structure.
Such attributes as water activity, expansion ratio, color and texture were evaluated by the scientists.
By implementing a higher expansion ratio, through the Atkinson Cycle, a 30% improvement in efficiency is achieved (9% of total fuel energy).
The use of this technique allows studying foams with different chemical compositions but keeping a constant expansion ratio.
Atkinson cycle provides an increased expansion ratio and reduces waste heat through a high compression ratio (13.
The expansion ratio was calculated from the following equation [13]:
An analysis of the extruded snack's quality indicated that adding 5% and 10% cold milled flaxseed did not affect the end product's expansion ratio, bulk density, water activity and firmness parameters.