Advanced search ?

Object

Effect of heating surface geometry on the droplets evaporation under Leidenfrost conditions
Download

Title: Effect of heating surface geometry on the droplets evaporation under Leidenfrost conditions

Creator:

Orzechowski, Tadeusz ; Wciślik, Sylwia

Date:

2024

Type:

artykuł w czasopiśmie

Alternative title:

Wpływ geometrii powierzchni grzewczej na parowanie kropel w warunkach Leidenfrosta

Description:

Physical and geometric factors are generally regarded as the main cause of evaporation characteristics of the Leidenfrost droplets levitating above the hot surface. It is well-known and generally accepted that similar research is conducted under different conditions and on individual measurement set-ups. This is one of the potential reasons for the differences in the results of thermal fluxes and computational models in scientific papers. This paper discusses the influence of the heating surface geometry on the heat transfer coefficient h during water drops evaporation under film boiling regime. The variable geometry parameters are the curvature radius of the heating bowl of R = 64 and 254 mm. Individually compiled test stands made it possible to measure the instantaneous drop mass for each R radius and to determine the coefficient h. The methodology was validated by calculating the relative error. It changes with the curvature radius and the droplet size, and for droplet mass from about 2 g to 0.3 g does not exceed ±10%. The heat transfer coefficient h is about 15% higher for a drop located on a surface with a larger radius of curvature. Moreover, the method that was devised allows us to estimate the h value for asymmetric droplet shapes. The advantage of the adopted method of measuring the drop mass over time is the possibility of analyzing heat transfer processes in any drop shape range, even in the case of asymmetric ones. Previous research methods were mainly based on determining the mass of the drop by calculating its volume.

Place of publishing:

Koszalin

Publisher:

Politechnika Koszalińska

Identifier:

oai:dlibra.tu.koszalin.pl:2053

Language:

eng

Is part of:

Rocznik Ochrona Środowiska. Vol. 26, s. 115-127

Rights:

Biblioteka Politechniki Koszalińskiej

Access rights:

internet

License:

Creative Commons BY-SA 4.0

Exlibris

Subject and keywords:

Leidenfrost film boiling droplet evaporation droplet shapes instabilities formatting

Object collections:

Last modified:

Oct 1, 2025

In our library since:

Oct 1, 2025

Number of object content hits:

5

All available object's versions:

https://dlibra.tu.koszalin.pl/publication/2063

Show description in RDF format:

RDF

Show description in OAI-PMH format:

OAI-PMH

Edition name Date
2024, Orzechowski, Tadeusz, Effect of heating surface geometry on the droplets evaporation under Leidenfrost conditions Oct 1, 2025
×

Citation

Citation style:

Contact details

Address

Biblioteka Politechniki Koszalińskiej ul. Racławicka 15-17 75-620 Koszalin

Phone

(+48) 94 34 78 455

E-Mail

dlibra@tu.koszalin.pl

Visit us!

This page uses 'cookies'. More information