蒙特卡洛射线追踪模拟视图因子,用于在圆柱形光生物反应器阵列中的分散太阳辐射测定,用于微藻种植
Yihan Zheng1, Lifeng Li1, Shengkai Dai1
1School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.
Bioresource technology
|July 13, 2025
概括
这项研究开发了一种蒙特卡罗射线跟踪模型,用于分析光生物反应器 (PBR) 阵列中的视图因素. 结果显示,相互遮阳显著影响辐射,分层布局将视图因素降低高达97%.
科学领域:
- 光生物反应器技术的技术.
- 可再生能源系统可再生能源系统
- 太阳能能源的利用 太阳能能源的利用
背景情况:
- 光生物反应器 (PBR) 对于微藻种植至关重要.
- 精确估计太阳辐射对于PBR效率至关重要.
- 户外PBR阵列配置会影响光线的可用性.
研究的目的:
- 开发一个蒙特卡罗射线跟踪 (MCRT) 模型,用于计算室外PBR阵列中的视图因子.
- 分析PBR尺寸,间距和阵列布局对视图因素的影响.
- 建立PBR系统中分散辐射量化的方法.
主要方法:
- 开发一个蒙特卡罗射线追踪 (MCRT) 模型.
- 模拟圆柱形PBRs的方形,分层和生物仿真阵列配置.
- 分析PBR尺寸,PBR间距,以及布局对视图因素的影响.
主要成果:
- 视图因素主要是由相互遮阳效应决定的.
- 分散的阵列显示了中央PBR,其视度因子比外围单元低多达97%.
- 在分层数组中减少PBR间距,平均视图因子降低了46% (0.301至0.163).
- 平均视图因子:正方形 (0.2410),分阶 (0.2416),仿生 (0.2259) 的情况.
结论:
- MCRT模型提供了一种可靠的方法来量化PBR阵列中的分散辐射.
- 阵列布局和间距显著影响光分布和PBR性能.
- 这种方法对于准确的PBR多物理模拟和优化至关重要.
相关概念视频
01:17Radiation: Applications
2.1K
The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...
The average...
2.1K
01:25Calculation of Electric Flux
3.4K
Consider the electric field of an oppositely charged, parallel-plate system and an imaginary box between those plates. Let the bottom face of the box be ABCD, and the top face be FGHK. The electric field between the plates is uniform and points from the positive plate toward the negative plate. The calculation of this field's flux through the box's various faces shows that the net flux through the box is zero. Why does the flux cancel out here?
3.4K
01:20Maxwell-Boltzmann Distribution: Problem Solving
3.1K
Individual molecules in a gas move in random directions, but a gas containing numerous molecules has a predictable distribution of molecular speeds, which is known as the Maxwell-Boltzmann distribution, f(v).
This distribution function f(v) is defined by saying that the expected number N (v1,v2) of particles with speeds between v1 and v2 is given by
This distribution function f(v) is defined by saying that the expected number N (v1,v2) of particles with speeds between v1 and v2 is given by
3.1K
01:09Radiation Pressure: Problem Solving
982
The radiation pressure applied by an electromagnetic wave on a perfectly absorbing surface equals the energy density of the wave. The wave's momentum also gets transferred to the surface when an electromagnetic wave is entirely absorbed by it. The rate at which momentum is transmitted to an absorbing surface perpendicular to the propagation direction equals the force on the surface.
The average value of the rate of momentum transfer divided by the absorbing area represents the average force...
The average value of the rate of momentum transfer divided by the absorbing area represents the average force...
982