Dynamic wetting: Hydrodynamic or molecular-kinetic?

Ranabothu, Srinivas R.; Karnezis, Cassandra; Dai, Lenore L.

doi:10.1016/j.jcis.2005.02.074

Cited by 84 publications

(64 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…roughness, permeability, wettability) on the spreading, fingering and splashing process. Specifically there is no simple model for dynamic wetting, although several approaches have been developed recently [24,147,[178][179][180].…”

Section: Synthesis Of the Relationship Between Bpa And Fd Concepts Smentioning

confidence: 99%

Fluid dynamics topics in bloodstain pattern analysis: Comparative review and research opportunities

Attinger

Moore

Donaldson

et al. 2013

Forensic Science International

158

139

View full text Add to dashboard Cite

This comparative review highlights the relationships between the disciplines of bloodstain pattern analysis (BPA) in forensics and that of fluid dynamics (FD) in the physical sciences. In both the BPA and FD communities, scientists study the motion and phase change of a liquid in contact with air, or with other liquids or solids. Five aspects of BPA related to FD are discussed: the physical forces driving the motion of blood as a fluid; the generation of the drops; their flight in the air; their impact on solid or liquid surfaces; and the production of stains. For each of these topics, the relevant literature from the BPA community and from the FD community is reviewed. Comments are provided on opportunities for joint BPA and FD research, and on the development of novel FD-based tools and methods for BPA. Also, the use of dimensionless numbers is proposed to inform BPA analyses. Keywordsbloodstain pattern analysis, review, dimensionless number, drop generation, trajectory, impact, stain Disciplines Laboratory and Basic Science Research | Other Mechanical EngineeringComments NOTICE: this is the author's version of a work that was accepted for publication in Forensic Science International. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Forensic Science International, [231, 1-3, (2013) Abstract: This comparative review highlights the relationships between the disciplines of bloodstain pattern analysis (BPA) in forensics and that of fluid dynamics (FD) in the physical sciences. In both the BPA and FD communities, scientists study the motion and phase change of a liquid in contact with air, or with other liquids or solids. Five aspects of BPA related to FD are discussed: the physical forces driving the motion of blood as a fluid; the generation of the drops; their flight in the air; their impact on solid or liquid surfaces; and the production of stains. For each of these topics, the relevant literature from the BPA community and from the FD community is reviewed. Comments are provided on opportunities for joint BPA and FD research, and on the development of novel FD-based tools and methods for BPA. Also, the use of dimensionless numbers is proposed to inform BPA analyses.

show abstract

Section: Synthesis Of the Relationship Between Bpa And Fd Concepts Smentioning

confidence: 99%

Fluid dynamics topics in bloodstain pattern analysis: Comparative review and research opportunities

Attinger

Moore

Donaldson

et al. 2013

Forensic Science International

158

139

View full text Add to dashboard Cite

show abstract

“…It represents the length of the region where the no-slip boundary condition of classical continuum theory does not hold, so this value should be in the order of molecular dimension [15].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Wetting and Dewetting: Comparison of Experiment with Theories

et al. 2016

View full text Add to dashboard Cite

Abstract. The dynamics wetting/dewetting of a metal surface by distilled water drop was studied experimentally. The advancing and receding dynamic contact angles were obtained as a function of a contact line speed. The hydrodynamic and molecular-kinetic models have been applied to the experimental data to interpret the obtained results. The independent variables of the molecular-kinetic and hydrodynamic models, and the determination coefficient were determined by fitting procedure. The receding contact angles are found to be fitted better to the wetting models in comparison with the advancing dynamic contact angles.

show abstract

“…Here K is the frequency of molecular displacement with a typical value 10 6 -10 7 s -1 [3,9,10,16]. Parameter Ȝ is the average jumping distance and its value should be of order of molecular dimensions ( § 1 nm).…”

Section: Introductionmentioning

confidence: 99%

“…Recently new models combining both approaches have been published [16,[18][19][20]. The basic assumption follows the idea that both the dynamic contact angle ș dyn and the microscopic contact angle ș m depend on the velocity.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Description of the three-phase contact line expansion

Váchová

Brabcová

Basařová

2014

EPJ Web of Conferences

View full text Add to dashboard Cite

Abstract. Knowledge of bubble-particle interaction is important in many industrial processes such as in flotation. While the collision (first interaction sub-process) between bubbles and particles is influenced only by hydrodynamic forces, the bubble behaviour during the attachment (second sub-process) is influenced both by hydrodynamic and surface forces. This work is focused on the study of the three-phase contact (TPC) line expansion during bubble adhesion on hydrophobic surface and on its experimental and mathematical description. The experiments were carried out in pure water where mobile bubble surface is expected. The rising bubble was studied in dynamic arrangement, whereas the stationary bubble was analysed in static arrangement. The attachment process was recorded using a high-speed digital camera and evaluated using image analysis. The diameter of the expanding TPC line as well as the dynamic contact angle was determined. Two approaches -the hydrodynamic and the molecular-kinetic -were used for mathematical description of the TPC line expansion. According to our results, the hydrodynamic model is suitable for the description of the initial fast phase of the expansion. The molecular-kinetic model was assessed as appropriate for almost whole range of TPC expansion. Parameters of the model were evaluated and compared for both types of arrangement.

show abstract

Dynamic wetting: Hydrodynamic or molecular-kinetic?

Cited by 84 publications

References 31 publications

Fluid dynamics topics in bloodstain pattern analysis: Comparative review and research opportunities

Fluid dynamics topics in bloodstain pattern analysis: Comparative review and research opportunities

Dynamic Wetting and Dewetting: Comparison of Experiment with Theories

Description of the three-phase contact line expansion

Contact Info

Product

Resources

About