Collaborative Research: Understanding Laser-Assisted Surface Cooling Enhancement (LASCE)

合作研究:了解激光辅助表面冷却增强 (LASCE)

基本信息

  • 批准号:
    1403508
  • 负责人:
  • 金额:
    $ 22.53万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2014
  • 资助国家:
    美国
  • 起止时间:
    2014-07-01 至 2018-06-30
  • 项目状态:
    已结题

项目摘要

CBET-1403508/1402587Aguilar/TrujilloThis grant provides funding for studying and developing a non-intrusive method to enhance local heat transfer between a target surface and a cooling fluid. The approach takes advantage of thermocavitation bubbles, which are formed when continuous wave (CW) laser light is properly focused within highly-absorbing liquid thin films. These bubbles form and collapse within microseconds, vigorously agitating the liquid and enhancing heat transfer. This phenomenon is called Laser-Assisted Surface Cooling Enhancement (LASCE). The PI's preliminary estimates show that heat transfer enhancement is as great as that of phase change (evaporation/boiling), which is the current upper limit to liquid-based cooling systems. LASCE may also match or exceed the performance obtained using micro-modified structures, but without implementing any type of surface modification. Also, CW lasers are often less complex lasing media, cheaper and simpler than pulse lasers, and can control the frequency of bubble formation simply by modulating their output power. The potential impact of this project, therefore, is in novel ways of controlling surface heat. This has implications for systems ranging from laser surgery to combustion engine devices.This study encompasses collaborative experimental and computational research between University of California-Riverside and University of Wisconsin-Madison aimed at studying and quantifying the: 1) balance between the heat input to induce thermal cavitation and the cooling produced by enhanced convection; 2) sensitivity of the resulting fluid flow to the operating parameters of the laser and; 3) physics of interaction between multiple cavitation events and its effect on enhanced convective cooling. Based on highly accurate numerical simulations and detailed measurement techniques, a thorough examination of the physics underpinning the most desirable heat transfer conditions will be sought, which is essential in optimizing the operation of LASCE. This will be followed by an equally important objective, which aims to explore LACSE's suitability for applications where surface modification is impossible, such as skin (scalp) cooling during laser therapy across a novel transparent cranial implant ("Window to the Brain") developed at UCR. The success of this project will open the door to many transformative applications of optical thermocavitation aimed at low-temperature combustion strategies for mitigating the levels of NOx and particulate matter emissions to improve engine efficiency as well as transdermal drug delivery for diverse biomedical applications.
CBET-1403508/1402587Aguilar/Trujillo 该赠款为研究和开发一种非侵入式方法提供资金,以增强目标表面和冷却流体之间的局部热传递。该方法利用了热空化气泡,当连续波 (CW) 激光正确聚焦在高吸收液体薄膜内时,就会形成热空化气泡。这些气泡在几微秒内形成并破裂,剧烈搅拌液体并增强传热。这种现象称为激光辅助表面冷却增强(LASCE)。 PI的初步估计表明,传热增强与相变(蒸发/沸腾)的传热增强一样大,这是目前液基冷却系统的上限。 LASCE 还可以匹配或超过使用微改性结构获得的性能,但无需实施任何类型的表面改性。此外,连续激光器通常是不太复杂的激光介质,比脉冲激光器更便宜、更简单,并且可以简单地通过调制其输出功率来控制气泡形成的频率。因此,该项目的潜在影响在于控制表面热量的新方法。这对从激光手术到内燃机设备等各种系统都有影响。这项研究包括加州大学河滨分校和威斯康星大学麦迪逊分校之间的合作实验和计算研究,旨在研究和量化:1)引起热空化的热输入与增强对流产生的冷却之间的平衡; 2) 产生的流体流动对激光器操作参数的敏感性; 3)多个空化事件之间相互作用的物理及其对增强对流冷却的影响。基于高精度的数值模拟和详细的测量技术,将寻求对支持最理想传热条件的物理原理进行彻底的检查,这对于优化 LASCE 的运行至关重要。接下来还有一个同样重要的目标,即探索 LACSE 对于不可能进行表面修饰的应用的适用性,例如在 UCR 开发的新型透明颅骨植入物(“大脑之窗”)进行激光治疗期间的皮肤(头皮)冷却。该项目的成功将为光学热空化的许多变革性应用打开大门,这些应用旨在降低氮氧化物和颗粒物排放水平的低温燃烧策略,以提高发动机效率以及各种生物医学应用的透皮给药。

项目成果

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Guillermo Aguilar其他文献

Digital holography: a tool to measure temperature and characterize phase changes during vitrification and rewarming
  • DOI:
    10.1016/j.cryobiol.2023.104613
  • 发表时间:
    2023-12-01
  • 期刊:
  • 影响因子:
  • 作者:
    Crysthal Alvarez;Balaji Baskar;Aditya Pandya;Soheil Kavian;Carla Berrrospe-Rodriguez;Matthew J. Powell-Palm;Guillermo Aguilar
  • 通讯作者:
    Guillermo Aguilar
A contrast-based model of achromatic transparency
基于对比度的消色差透明度模型
  • DOI:
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    0
  • 作者:
    M. Maertens;Minjung Kim;Guillermo Aguilar
  • 通讯作者:
    Guillermo Aguilar
Title Transparent nanocrystalline yttria-stabilized-zirconia calvarium prosthesis
名称 透明纳米晶氧化钇稳定氧化锆颅骨假体
  • DOI:
  • 发表时间:
    2013
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Carissa L. Reynolds;J. Szu;Mike S. Hsu;Yasuhiro Kodera;Devin K. Binder;B. H. Park;Javier E. Garay;Masaru P. Rao;Guillermo Aguilar
  • 通讯作者:
    Guillermo Aguilar
Estimating the contribution of early and late noise in vision from psychophysical data
根据心理物理数据估计早期和晚期噪声对视觉的贡献
  • DOI:
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    0
  • 作者:
    J. Malo;J. Esteve;Guillermo Aguilar;M. Maertens;F. Wichmann
  • 通讯作者:
    F. Wichmann
Methods and measurements to compare men against machines
比较人与机器的方法和测量
  • DOI:
    10.2352/issn.2470-1173.2017.14.hvei-113
  • 发表时间:
    2017
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Felix Wichmann;David H. J. Janssen;Robert Geirhos;Guillermo Aguilar;Heiko H. Schütt;M. Maertens;M. Bethge
  • 通讯作者:
    M. Bethge

Guillermo Aguilar的其他文献

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{{ truncateString('Guillermo Aguilar', 18)}}的其他基金

PIRE: Synthesis of Optical Materials for Bioapplications: Research, Education, Recruitment and Outreach (SOMBRERO)
PIRE:生物应用光学材料的合成:研究、教育、招聘和推广 (SOMBRERO)
  • 批准号:
    2232111
  • 财政年份:
    2022
  • 资助金额:
    $ 22.53万
  • 项目类别:
    Continuing Grant
PFI-TT: Optimization of a portable blood flow monitor for improving reconstructive surgery operations and recovery
PFI-TT:优化便携式血流监测仪,以改善重建手术操作和恢复
  • 批准号:
    1940992
  • 财政年份:
    2020
  • 资助金额:
    $ 22.53万
  • 项目类别:
    Standard Grant
Portable Perfusion Monitor Team for National I-Corps Program
国家 I-Corps 计划便携式灌注监测团队
  • 批准号:
    1844637
  • 财政年份:
    2018
  • 资助金额:
    $ 22.53万
  • 项目类别:
    Standard Grant
PIRE: Synthesis of Optical Materials for Bioapplications: Research, Education, Recruitment and Outreach (SOMBRERO)
PIRE:生物应用光学材料的合成:研究、教育、招聘和推广 (SOMBRERO)
  • 批准号:
    1545852
  • 财政年份:
    2015
  • 资助金额:
    $ 22.53万
  • 项目类别:
    Continuing Grant
EAGER: Biocompatibility of nanocrystalline YSZ transparent cranial implant
EAGER:纳米晶YSZ透明颅骨植入物的生物相容性
  • 批准号:
    1547014
  • 财政年份:
    2015
  • 资助金额:
    $ 22.53万
  • 项目类别:
    Standard Grant
CTS-SGER: Thermo-Mechanical Interactions of Ultrashort Laser Pulses with Subsurface Targets of Tissue Models
CTS-SGER:超短激光脉冲与组织模型地下目标的热机械相互作用
  • 批准号:
    0609662
  • 财政年份:
    2006
  • 资助金额:
    $ 22.53万
  • 项目类别:
    Standard Grant

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