EXP 1-4 Description: Difference between revisions

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The liquid used in the experiments is silicone oil. Its physical properties
The liquid used in the experiments is silicone oil (density, kinematic viscosity, surface tension) while the ambient gas is air (density, kinematic viscosity).
are summarized in Table 1. The film height h = 500 μm as well as the
 
The film height h = 500 μm as well as the
drop diameter D = 1.5mm are kept fixed, resulting in δ = 0.33 and Oh =
drop diameter D = 1.5mm are kept fixed, resulting in δ = 0.33 and Oh =
0.03, respectively. The drop velocity is varied from 1 to 3 m/s.
0.03, respectively. The drop velocity is varied from 1 to 3 m/s.

Revision as of 09:52, 2 June 2023

Axisymmetric drop impact dynamics on a wall film of the same liquid

Front Page

Introduction

Review of experimental studies

Description

Experimental Set Up

Measurement Quantities and Techniques

Data Quality and Accuracy

Measurement Data and Results

Description of Study Test Case

This section should:
* Convey the general set-up of the test case configuration (e.g. airflow over a bump on the floor of a wind tunnel)
* Describe the geometry, illustrated by a sketch
* Specify the flow parameters which define the flow regime (e.g. Reynolds number, Rayleigh number, angle of incidence etc.)
* give the principal quantities of interest that were measured - these should include global parameters but also mean-flow and turbulence parameters.

The description can be kept fairly short if reference can be made to a publication or a link to a data base where details are given. For other cases a more detailed, self-contained description should be provided.

The liquid used in the experiments is silicone oil (density, kinematic viscosity, surface tension) while the ambient gas is air (density, kinematic viscosity).

The film height h = 500 μm as well as the drop diameter D = 1.5mm are kept fixed, resulting in δ = 0.33 and Oh = 0.03, respectively. The drop velocity is varied from 1 to 3 m/s. Accordingly, the Weber number is in the range 78 􀀀 702 while the Reynolds number Re = We0.5/Oh is in the range 300 􀀀 900, see Table 2

Investigated drop impact velocities
Impact energy Impact velocity Weber number Reynolds number
Low 1 m/s 78.0 300
Moderate 2 m/s 311.9 600
High 3 m/s 701.7 900




Contributed by: Bastian Stumpf, Milad Bagheri, Ilia V. Roisman, Cameron Tropea, Jeanette Hussong, Martin Wörner, Holger Marschall — Technical University of Darmstadt and Karlsruhe Institute of Technology

Front Page

Introduction

Review of experimental studies

Description

Experimental Set Up

Measurement Quantities and Techniques

Data Quality and Accuracy

Measurement Data and Results


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