scholarly journals Study on Phase Change Behavior of High Viscosity Fluid Under Sudden Decompression

2006 ◽  
Vol 1 ◽  
pp. 143-153
Author(s):  
Yutaka ABE ◽  
Nobuyuki WAKABAYASHI
Keyword(s):  
Phase Change ◽  
High Viscosity ◽  
Change Behavior ◽  
Viscosity Fluid

Partially Filled Flow Simulation Using Meshfree Method for High Viscosity Fluid in Plastic Mixer

2019 ◽  
Vol 34 (2) ◽  
pp. 279-289
Author(s):  
K. Sekiyama ◽  
S. Yamada ◽  
T. Nakagawa ◽  
Y. Nakayama ◽  
T. Kajiwara
Keyword(s):  
Flow Simulation ◽  
Meshfree Method ◽  
High Viscosity ◽  
Viscosity Fluid

Effect of dopamine-modified expanded vermiculite on phase change behavior and heat storage characteristic of polyethylene glycol

2021 ◽  
Vol 415 ◽  
pp. 128992
Author(s):  
Heng Wang ◽  
Yong Deng ◽  
Fuzhong Wu ◽  
Xinyi Dai ◽  
Wenhao Wang ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Phase Change ◽  
Heat Storage ◽  
Expanded Vermiculite ◽  
Change Behavior

Effects of SiO2 interlayers on the phase change behavior in the multilayer Zn15Sb85/SiO2 materials

2019 ◽  
Vol 798 ◽  
pp. 342-349 ◽  
Author(s):  
Rui Zhang ◽  
Yifeng Hu ◽  
Qingqian Chou ◽  
Tianshu Lai ◽  
Xiaoqin Zhu
Keyword(s):  
Phase Change ◽  
Change Behavior

Thermodynamic Nonequilibrium Phase Change Behavior and Thermal Properties of Biological Solutions for Cryobiology Applications

2004 ◽  
Vol 126 (2) ◽  
pp. 196-203 ◽  
Author(s):  
Bumsoo Han ◽  
John C. Bischof
Keyword(s):  
Thermal Properties ◽  
Phase Change ◽  
Latent Heat ◽  
Thermodynamic Equilibrium ◽  
Low Temperatures ◽  
Eutectic Phase ◽  
Phase Changes ◽  
Chemical Additives ◽  
Change Behavior ◽  
Saline Solutions

Understanding the phase change behavior of biomaterials during freezing/thawing including their thermal properties at low temperatures is essential to design and improve cryobiology applications such as cryopreservation and cryosurgery. However, knowledge of phase change behavior and thermal properties of various biomaterials is still incomplete, especially at cryogenic temperatures ⩽−40°C. Moreover, in these applications, chemicals are often added to improve their outcome, which can result in significant variation in the phase change behavior and thermal properties from those of the original biomaterials. These chemical additives include cryoprotective agents (CPAs), antifreeze protein (AFP), or cryosurgical adjuvants like sodium chloride (NaCl). In the present study, phase change behavior and thermal properties of saline solutions–either water-NaCl or phosphate buffered saline (PBS)–with various chemical additives were investigated. The chemical additives studied are glycerol and raffinose as CPAs, an AFP (Type III, molecular weight=6500), and NaCl as a cryosurgical adjuvant. The phase change behavior was investigated using a differential scanning calorimeter (DSC) and a cryomicroscope. The specific and latent heat of these solutions were also measured with the DSC. The saline solutions have two distinct phase changes–water/ice and eutectic phase changes. During freezing, eutectic solidification of both water-NaCl and PBS are significantly supercooled below their thermodynamic equilibrium eutectic temperatures. However, their melting temperatures are close to thermodynamic equilibrium during thawing. These eutectic phase changes disappear when even a small amount (0.1 M glycerol) of CPA was added, but they are still observed after the addition of an AFP. The specific heats of these solutions are close to that of ice at very low temperatures ⩽−100°C regardless of the additives, but they increase between −100°C and −30°C with the addition of CPAs. The amount of latent heat, which is evaluated with sample weight, generally decreases with the addition of the additives, but can be normalized to approximately 300 J/g based on the weight of water which participates in the phase change. This illustrates that thermal properties, especially latent heat, of a biomaterial should be evaluated based on the understanding of its phase change behavior. The results of the present study are discussed in the context of the implications for cryobiology applications.

Optical diagnostics of the structure and evolution of buoyant jets in a high-viscosity fluid

2014 ◽  
Vol 50 (5) ◽  
pp. 466-473 ◽  
Author(s):  
V. A. Arbuzov ◽  
E. V. Arbuzov ◽  
V. S. Berdnikov ◽  
N. S. Bufetov ◽  
Yu. N. Dubnishchev ◽  
...  
Keyword(s):  
Optical Diagnostics ◽  
High Viscosity ◽  
Buoyant Jets ◽  
Viscosity Fluid

Investigation of Ni Doped Ge-Te Materials for High Temperature Phase Change Memory Applications

2016 ◽  
Vol 848 ◽  
pp. 460-465
Author(s):  
Liang Liang Cao ◽  
Liang Cai Wu ◽  
Zhi Tang Song ◽  
Wen Qing Zhu ◽  
Yong Hui Zheng ◽  
...  
Keyword(s):  
High Temperature ◽  
Phase Change ◽  
High Speed ◽  
Random Access ◽  
High Temperature Phase ◽  
Temperature Phase ◽  
Change Behavior ◽  
Transmission Electron ◽  
Ni Addition ◽  
Memory Applications

Ni-doped Ge-Te (Ni-GT) material was proposed and investigated for phase change random access memory (PCRAM) applications. With Ni addition, the crystallization temperature, data retention ability and crystallization speed were obviously improved. The surface roughness of crystalline Ni-GT films was decreased by Ni incorporation. Moreover, temperature dependent transmission electron microscopy (TEM) was applied to investigate the phase change behavior of Ni-GT films. All the experimental results demonstrated that Ni-GT material has potential for high-speed PCRAM applications in high temperature environment.

Investigation on Phase Change Behavior of Paraffin Phase Change Material in a Spherical Capsule for Solar Thermal Storage Units

2017 ◽  
Vol 39 (9) ◽  
pp. 775-783 ◽  
Author(s):  
Kandasamy Hariharan ◽  
Gowri Sankar Senthil Kumar ◽  
Govindaraj Kumaresan ◽  
Ramalingam Velraj
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Thermal Storage ◽  
Solar Thermal ◽  
Change Behavior ◽  
Spherical Capsule ◽  
Change Material ◽  
Storage Units
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