A review of HTGR graphite dust transport research

A review of recent advances in HTGR CFD and thermal fluid analysis

A novel moment method using the log skew normal distribution for particle coagulation

Understanding the aging process of aerosol particles is important for assessing their chemical reactivity, cloud condensation nuclei activity, radiative properties and health impacts. In this study we investigate the aging of black carbon containing particles in an idealized urban plume using a new approach, the particle-resolved aerosol model PartMC-MOSAIC. We present a method to estimate aging time-scales using an aging criterion based on cloud condensation nuclei activation. The results show a separation into a daytime regime where condensation dominates and a nighttime regime where coagulation dominates. There is also a strong dependence on supersaturation threshold. For the chosen urban plume scenario and supersaturations ranging from 0.1% to 1%, the aging time-scales vary between 11 and 0.068 h during the day, and between 54 and 6.4 h during the night.

Estimating Black Carbon Aging Time-Scales with a Particle-Resolved Aerosol Model

Numerical study of heat transfer and sulfuric acid decomposition in the process of hydrogen production

The impact of graphite dust on structural equipment is a potential safety hazard in HTGR The present study focuses on the graphite particle deposition process on the deflector in the inlet passageway of intermediate heat exchanger and analyzes the effect of particle size on inertial deposition and diffusion deposition Meanwhile, the particle rebound behavior is considered when the particle impacts the wall To determine the relevant parameters of the rebound model, the experiments about adhesion are carried out and validated Then the flow field is simulated in the inlet passageway of intermediate heat exchanger based on k–e turbulent model, and particle trajectories are predicted by a discrete particle model with rebound boundary The results show that adhesion force by measures is obviously smaller than theoretical model In addition, the particle deposition rate decreases first and then increases, and the rebound model makes d eposition results more actual

Study of the deposition of graphite dust in the inlet passageway of intermediate heat exchanger in VHTR

An extended log-normal method of moments (ELNMOM) is presented in this study for solving the population balance equation (PBE) for Brownian coagulation. The method is an extension of the log-normal...

Kaiyuan Wang

Papers

A review of HTGR graphite dust transport research

A novel moment method using the log skew normal distribution for particle coagulation

Study of the deposition of graphite dust in the inlet passageway of intermediate heat exchanger in VHTR

Extended log-normal method of moments for solving the population balance equation for Brownian coagulation

A new approximation approach for analytically solving the population balance equation due to thermophoretic coagulation