@article{oai:nagoya.repo.nii.ac.jp:00030708,
 author = {Soga, Takeo and Kim, Byung Gon and Suda, Hideo},
 issue = {1},
 journal = {Memoirs of the Faculty of Engineering, Nagoya University},
 month = {Oct},
 note = {Effusion flows from a two-dimensional porous surface and expansion flows from a sonic slit were studied based upon the DSMC method. Present simulation was carried out under the suspicion that thermal motion of gas molecules would partially change into back flow in effusion flow. Effusion flow was accelerated to a supersonic expansion flow but the virtual stagnation pressure of this expansion flow was much lower than the pressure at the surface. Features of effusion flow with back flow were revealed. No substantial back flow was seen even in the effusion flow from a porous surface. The back flow seemed to be separated from the main flow of the effusion and effects of the back flow were very restricted. Several cell sizes were employed in the simulation of expansion flow. It was found that cell size should be finer than (slit hight/60)[Χ](slit hight/60) so that we might obtain accurate density contour. Value of the parameter p[0]d used in the simulation was about 24torr-mm, which was comparable with the conventional experimental conditions.},
 pages = {135--146},
 title = {Direct simulation of effusion and expansion flows from a slit into a vacuum},
 volume = {43},
 year = {1991}
}