scholarly journals Advancing drops on curved and flat surfaces

2019 ◽  
Vol 11 (4) ◽  
pp. 223-226
Author(s):  
Claudiu PATRASCU ◽  
Ioana RASUCEANU ◽  
Corneliu BALAN
Keyword(s):  
Experimental Data ◽  
Theoretical Model ◽  
Qualitative Agreement ◽  
Immiscible Liquid ◽  
Solid Surfaces ◽  
Good Qualitative Agreement ◽  
Hydrophobic Surfaces ◽  
Flat Surfaces ◽  
Theoretical Predictions ◽  
Inclined Planes

The paper is concerned with the dynamics of advancing liquid blobs of fluid on curved and flat solid surfaces, such as cycloids and inclined planes. We investigate the kinematics of such blobs on hydrophobic surfaces with emphasis on the shape of the interface as the fluid advances. A theoretical model is proposed that captures the shape of the interface at early times. Also, the trajectory of the fluid, as it detaches from the cycloid, is investigated and compared with theoretical predictions. We find a good qualitative agreement between predictions and experimental data. As an extension of the present findings, we also investigate the shape and the dynamics of advancing drops on cycloids, placed in a viscous outer immiscible liquid. We find both similarities, in terms of kinematics, and specific differences in the shape of the advancing drop.

Modeling of Martensite Accommodation Effect on Mechanical Behavior of Shape Memory Alloys

1999 ◽  
Vol 121 (1) ◽  
pp. 102-104 ◽  
Author(s):  
M. E. Evard ◽  
A. E. Volkov
Keyword(s):  
Experimental Data ◽  
Plastic Deformation ◽  
Shape Memory Alloys ◽  
Mechanical Behavior ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Qualitative Agreement ◽  
Strain Accumulation ◽  
Good Qualitative Agreement

An approach has been presented to account for micro-plastic deformation and stress produced by accommodation of martensite. This has made it possible to describe such phenomena as incomplete recovery of strain, strain accumulation at thermocycling, and repeated two-way shape memory effect. Results of modeling are in good qualitative agreement with experimental data.

scholarly journals Measurement and prediction of binary mixture flash point

2013 ◽  
Vol 11 (1) ◽  
pp. 57-62 ◽  
Author(s):  
Mariana Hristova
Keyword(s):  
Experimental Data ◽  
Binary Mixture ◽  
Binary Mixtures ◽  
Qualitative Agreement ◽  
Flash Point ◽  
Wilson Equation ◽  
Good Qualitative Agreement ◽  
Raoult’S Law ◽  
Raoult's Law

AbstractThe flash points of three binary mixtures, containing n-heptane, o-xylene, m-xylene and ethylbenzene, were measured by Pensky-Martens closed cup tester. The experimental data were compared with the calculated values using Liaw’s Model with the application of Raoult’s Law and Wilson equation. These equations were in good qualitative agreement.

On the Thermomagnetic Gas Torque for Collinear Static and Alternating Magnetic Fields

1970 ◽  
Vol 25 (10) ◽  
pp. 1367-1369
Author(s):  
S. Hess ◽  
L. Waldmann
Keyword(s):  
Experimental Data ◽  
Magnetic Fields ◽  
Kinetic Theory ◽  
Qualitative Agreement ◽  
Quantitative Agreement ◽  
Good Qualitative Agreement ◽  
Thermal Pressure ◽  
Alternating Magnetic Fields

Abstract Results obtained within the framework of kinetic theory are presented for the part of the thermo-magnetic gas torque which stems from the thermal pressure and is associated with the influence of the magnetic fields on the viscosity (Senftleben-Beenakker effect). Good qualitative agreement and a quantitative agreement within a factor of roughly 1.5 are found between the theory and the experimental data of Smith and Scott [1969].

Thermal Conductivity of Composites with Carbon Nanotubes: Theory and Experiment

2012 ◽  
Vol 1479 ◽  
pp. 101-106
Author(s):  
J. Ordonez-Miranda ◽  
C. Vales-Pinzon ◽  
J. J. Alvarado-Gil
Keyword(s):  
Experimental Data ◽  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Theoretical Model ◽  
Size Effects ◽  
Polyester Resin ◽  
Thermal Design ◽  
Theoretical Predictions ◽  
Theory And Experiment ◽  
Composite Samples

ABSTRACTIn this work, the thermal conductivity of composites made up of carbon nanotubes embedded in a polyester resin is investigated by comparing experimental data with theoretical predictions. The composite samples were prepared with a random and aligned distribution of carbon nanotubes. Its thermal conductivity is then measured by using the photothermal radiometry technique. The obtained experimental data is accurately described by the proposed theoretical model, which takes into account the size effects of the nanotubes. It is expected that the obtained results can provide useful insights on the thermal design of composites based on carbon nanotubes.

scholarly journals ANALYSIS OF THE BENDING STRAIN INFLUENCE ON THE CURRENT-VOLTAGE CHARACTERISTICS OF HTC SUPERCONDUCTING TAPES

2018 ◽  
Vol 8 (1) ◽  
pp. 67-70
Author(s):  
Jacek Sosnowski
Keyword(s):  
Experimental Data ◽  
Theoretical Model ◽  
Liquid Nitrogen ◽  
Qualitative Agreement ◽  
Liquid Nitrogen Temperature ◽  
Experimental Investigations ◽  
Superconducting Tapes ◽  
Bending Strain ◽  
Current Voltage ◽  
Current Voltage Characteristics

Analysis of the influence of the bending strain on the electric properties of the HTc superconducting tapes is presented. The results of experimental investigations in liquid nitrogen temperature of the current-voltage characteristics and critical current of Bi-based tape are given for various bending strain values. Theoretical model of obtained dependences is proposed, while results of numerical calculations are in qualitative agreement with experimental data.

scholarly journals Monte Carlo Calculation of Fragment Distributions in Nuclear Reactions

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
A. Deppman ◽  
E. Andrade-II ◽  
P. C. R. Rossi ◽  
F. Garcia ◽  
J. R. Maiorino
Keyword(s):  
Experimental Data ◽  
Monte Carlo ◽  
Qualitative Agreement ◽  
Nuclear Reactions ◽  
Monte Carlo Calculation ◽  
High Energy ◽  
Fission Reactions ◽  
Good Qualitative Agreement ◽  
Driven Systems ◽  
Mc Method

The fragments produced in nuclear reactions for accelarator driven systems (ADS) operation form elements that can have effects on the structure of the reactor. In this regard, the calculation of fragment distributions gives important information for the development of ADS. To obtain those distributions, the Monte Carlo (MC) method is an important tool, and in this work we describe calculations of fragment distributions through a MC code for reactions initiated by intermediate- and high-energy protons and photons on actinide and preactinide nuclei. We study the production of fragments through spallation and fission reactions. The results show good qualitative agreement with experimental data.

A Theoretical Investigation of Pressure Depression in Externally Pressurized Gas-Lubricated Circular Thrust Bearings

1961 ◽  
Vol 83 (2) ◽  
pp. 201-208 ◽  
Author(s):  
Haruo Mori
Keyword(s):  
Experimental Data ◽  
Mathematical Model ◽  
Shock Wave ◽  
Qualitative Agreement ◽  
Load Capacity ◽  
Pressure Profile ◽  
Theoretical Explanation ◽  
Good Qualitative Agreement ◽  
Thrust Bearings ◽  
Approximate Mathematical Model

A theoretical explanation of the experimentally observed depression of the pressure profile in externally pressurized gas-lubricated circular thrust bearings is presented, based on a concept new to gas lubrication, that of the generation of a shock wave in the bearing clearance space. On the basis of an approximate mathematical model, the bearing pressure distribution and load capacity are determined, and the effects of several bearing parameters are discussed. Good qualitative agreement is found between the analytical results and available experimental data.

scholarly journals An Additive Model to Predict the Rheological and Mechanical Properties of Polypropylene Blends Made by Virgin and Reprocessed Components

Recycling ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 2
Author(s):  
Francesco Paolo La Mantia ◽  
Maria Chiara Mistretta ◽  
Vincenzo Titone
Keyword(s):  
Experimental Data ◽  
Mechanical Properties ◽  
Additive Model ◽  
Industrial Process ◽  
Theoretical Predictions ◽  
Experimental Values ◽  
Polypropylene Blends ◽  
Polypropylene Sample

In this work, an additive model for the prediction of the rheological and mechanical properties of monopolymer blends made by virgin and reprocessed components is proposed. A polypropylene sample has been reprocessed more times in an extruder and monopolymer blends have been prepared by simulating an industrial process. The scraps are exposed to regrinding and are melt reprocessed before mixing with the virgin polymer. The reprocessed polymer is, then, subjected to some thermomechanical degradation. Rheological and mechanical experimental data have been compared with the theoretical predictions. The results obtained showed that the values of this simple additive model are a very good fit for the experimental values of both rheological and mechanical properties.

A Technique for the Laboratory Determination of Recirculation in Single Needle Dialysis

1993 ◽  
Vol 16 (2) ◽  
pp. 63-70 ◽  
Author(s):  
N.A. Hoenich ◽  
P.T. Smirthwaite ◽  
C. Woffindin ◽  
P. Lancaster ◽  
T.H. Frost ◽  
...  
Keyword(s):  
Experimental Data ◽  
Flow Rate ◽  
Experimental Results ◽  
New Technique ◽  
Treatment Efficiency ◽  
Single Lumen ◽  
Theoretical Predictions ◽  
Lumen Catheter ◽  
A New Technique

Recirculation is an important factor in single needle dialysis and, if high, can compromise treatment efficiency. To provide information regarding recirculation characteristics of access devices used in single needle dialysis, we have developed a new technique to characterise recirculation and have used this to measure the recirculation of a Terumo 15G fistula needle and a VasCath SC2300 single lumen catheter. The experimentally obtained results agreed well with those established clinically (8.5 ± 2.4% and 18.4 ± 3.4%). The experimental results have also demonstrated a dependence on access type, pump speeds and fistula flow rate. A comparison of experimental data with theoretical predictions showed that the latter exceeded those measured with the largest contribution being due to the experimental fistula.

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