Vapor solidification of saturated air in two-dimensional stagnation flow

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Shokrgozar Abbasi a.; GHAYENI M.

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Journal Paper

Paper Information

Journal: Scientia Iranica Year:2020 | Volume:27 | Issue:2 (Transactions B: Mechanical Engineering) Page(s): 693-703

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Information Journal Paper

Title

Vapor solidification of saturated air in two-dimensional stagnation flow

Author(s)

Shokrgozar Abbasi a. | GHAYENI M. | Issue Writer Certificate

Keywords

Water vapor solidification

Stagnation flow

Unsteady flow

Viscous fluid

Incompressible flow

Similarity solution

Abstract

In the present paper, Stagnation flow solidification of vapor from saturated air is investigated. Saturated air with strain rate a impinges on a flat plate and, because the plate temperature is below the freezing temperature of water, condensation occurs and an ice layer forms on the plate. The ice surface is modeled as an accelerated flat plate moving toward the impinging fluid. The unsteady Navier-Stokes equations were subjected to a similarity transformation to obtain a single ordinary differential equation for the velocity distribution. Two methods of solution were used for the energy equation: a finite-difference numerical technique and a numerical solution of a similarity equation; these two results were compared to establish accuracy. Freezing time first increases as the far-field temperature decreases from above zero degrees Celcius and then rapidly approaches zero as the far-field temperature approaches zero Celcius. Despite the physical experiment, here the size of the nearest cell to the substrate controls the time at which condensation begins. As a result, maximum time before freezing begins occurs at about 5℃ air temperature, with the cell size 0. 01 or 0. 02 mm. The air temperature distribution and the ultimate frozen thickness for two saturated air temperatures are also presented.

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APA: Copy

Shokrgozar Abbasi, a., & GHAYENI, M.. (2020). Vapor solidification of saturated air in two-dimensional stagnation flow. SCIENTIA IRANICA, 27(2 (Transactions B: Mechanical Engineering)), 693-703. SID. https://sid.ir/paper/290813/en

Vancouver: Copy

Shokrgozar Abbasi a., GHAYENI M.. Vapor solidification of saturated air in two-dimensional stagnation flow. SCIENTIA IRANICA[Internet]. 2020;27(2 (Transactions B: Mechanical Engineering)):693-703. Available from: https://sid.ir/paper/290813/en

IEEE: Copy

a. Shokrgozar Abbasi, and M. GHAYENI, “Vapor solidification of saturated air in two-dimensional stagnation flow,” SCIENTIA IRANICA, vol. 27, no. 2 (Transactions B: Mechanical Engineering), pp. 693–703, 2020, [Online]. Available: https://sid.ir/paper/290813/en

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