Adherence and bouncing of liquid droplets impacting on dry surfaces

Caviezel, D.; Narayanan, Chidambaram; Lakehal, Djamel

doi:10.1007/s10404-007-0248-2

Cited by 68 publications

(40 citation statements)

References 14 publications

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“…As a powerful alternative to experimental studies, numerical simulations have been applied to explore the droplet wetting process. In literature, various computational methods are used in this context such as volume-of-fluid (VOF) [27][28][29], level-set [30], front-tracking [31], Lattice-Boltzmann [32] and phase field [33][34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Maximum Spreading of Urea Water Solution during Drop Impingement

et al. 2019

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Droplet impingement of urea water solution (UWS) is a common source for liquid film and solid deposits formed in the tailpipe of diesel engines. In order to better understand and predict wetting phenomena on the tailpipe wall, this study focuses on droplet spreading dynamics of urea water solution. Impingement of single droplets is investigated under defined conditions by high‐speed imaging using shadowgraphy technique. The experimental studies are complemented by numerical simulations with a phase‐field method. Computational results are in good agreement with experimental data for the advancing phase of spreading and the maximum and terminal spreading radius, whereas for the receding phase notable differences occur. For the maximum spreading radius, an empirical correlation derived for glycerol‐water‐ethanol mixtures is found to be valid for millimeter‐sized UWS droplets as well. A numerical simulation for a much smaller droplet however indicates that this correlation is not valid for the tiny droplets of UWS sprays in technical applications.

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Section: Introductionmentioning

confidence: 99%

Maximum Spreading of Urea Water Solution during Drop Impingement

et al. 2019

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“…Upon impact, the liquid contained in the drop might fully or partially bounce away from the wall [126,[151][152][153]. A correlation in [154] predicts the volume of Newtonian liquid that will be retained on a solid surface, based on the difference (or hysteresis) between receding and advancing wetting angles.…”

Section: An Example Of Current Capabilities Of Computational Fluid Dymentioning

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

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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.

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“…Selective (but not limited) studies include different models for interface tracking, i.e. Lagrangian (Marker cell [42], deforming grid [43,44], Front tracking [45,46], LCRM [47]), Eulerian (SOLA-VOF [18,48,49], Volume of Fluid Method (VOF) [50][51][52][53], CLSVOF [54], Level Set [55,56], VOF+PLIC [57], PLIC, VOF with Young reconstruction [41,58]), Eulerian-Lagrangian [59,60], Lattice-Boltzmann [61,62], and lately the phase field approach (Cahn-Hillard equation) [63]. Other studies also account for the effect of heat transfer mechanisms [44,48,49,52,53,[64][65][66][67] between the impinging droplet and the substrates but these fall outside the scope of the present study.…”

Section: Introductionmentioning

confidence: 99%

“…In [61] where the Lattice-Boltzmann method was used, an external force field was introduced at the active cells being in contact with the wall. Finally, in the Level Set function, utilized in the work of Caveziel et al [55], a different re-initialization method near the wall was adopted, while Griebel et al [56] used a fixed value Neumann boundary condition at the wall for the free surface normal of the Level Set function. Table 1 summarizes the approaches used and the range of conditions of the aforementioned representative studies.…”

Section: Introductionmentioning

confidence: 99%

VOF simulations of the contact angle dynamics during the drop spreading: Standard models and a new wetting force model

Malgarinos

Νikolopoulos

Marengo

et al. 2014

Advances in Colloid and Interface Science

177

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It is thus concluded that theimplementation of this model is an effective approach for overcoming the need of a pre-defined dynamic contact angle law, frequently adopted as an approximate boundary condition for such simulations. Clearly, this model is mostly influential during the spreading phase for the cases of low We number impacts (We<˜80) since for high impact velocities, inertia dominates significantly over capillary forces in the initial phase of spreading.

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Adherence and bouncing of liquid droplets impacting on dry surfaces

Cited by 68 publications

References 14 publications

Maximum Spreading of Urea Water Solution during Drop Impingement

Maximum Spreading of Urea Water Solution during Drop Impingement

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

VOF simulations of the contact angle dynamics during the drop spreading: Standard models and a new wetting force model

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