스포츠 토토 라이브 스코어APCTP-POSTECH Distinguished Lecture[09
관련링크
본문
"
“Onsager Principle and
Nanoscale Hydrodynamics”
♦Speaker :스포츠 토토 적중 결과Prof. Ping Sheng (Hong Kong University)
♦Place : Physics Seminar Room (Science Bldg, 3-201)
♦Date & Time : July 3 (Fri), 15:00 ~ 16:00 pm
Abstract
It is probably not a well-known fact that up until recently, continuum hydrodynamics can not accurately
model immiscible flows at the nanoscale.스포츠 토토 적중 결과The problem is not with the스포츠 토토 적중 결과Navier-Stokes스포츠 토토 적중 결과equation,스포츠 토토 적중 결과which
must be true, but lies in the hydrodynamic boundary condition, which for스포츠 토토 적중 결과the스포츠 토토 적중 결과past스포츠 토토 적중 결과century스포츠 토토 적중 결과has스포츠 토토 적중 결과been
held to be no-slip at the fluid-solid interface.스포츠 토토 적중 결과In this talk, the history스포츠 토토 적중 결과of스포츠 토토 적중 결과the스포츠 토토 적중 결과hydrodynamic스포츠 토토 적중 결과boundary
condition and its associated classic problem of moving contact line will be introduced in스포츠 토토 적중 결과some스포츠 토토 적중 결과detail.
Here the contact line denotes the intersection of the immiscible fluid-fluid interface with the solid wall,
and when one fluid displaces the other, the contact line moves along스포츠 토토 적중 결과the스포츠 토토 적중 결과solid스포츠 토토 적중 결과wall.스포츠 토토 적중 결과 Almost스포츠 토토 적중 결과half스포츠 토토 적중 결과a
century ago it was already recognized that the moving contact line will lead to infinite viscous dissipation
if one uses the no-slip hydrodynamic boundary condition.스포츠 토토 적중 결과We show that by using the Onsager variational
principle, which can be easily derived from basic statistical mechanic principles, one can simultaneously
derive the Navier-Stokes equation스포츠 토토 적중 결과and스포츠 토토 적중 결과its스포츠 토토 적중 결과related스포츠 토토 적중 결과boundary스포츠 토토 적중 결과conditions스포츠 토토 적중 결과at스포츠 토토 적중 결과the스포츠 토토 적중 결과fluid-solid스포츠 토토 적중 결과interface.
The resulting continuum hydrodynamic system, with the revised hydrodynamic스포츠 토토 적중 결과boundary스포츠 토토 적중 결과conditions,스포츠 토토 적중 결과is
shown for the first time to quantitatively reproduce molecular dynamic simulation results at the nanoscale.
Implications of this result for nanoscale hydrodynamics, together with its complementary relation to스포츠 토토 적중 결과the
kinetic theory of fluids, will be shown by short movies as well as discussed.
Contact Person : Prof. Wokyung Sung(054-279-2061, wsung@postech.ac.kr)
"
“Onsager Principle and
Nanoscale Hydrodynamics”
♦Speaker :스포츠 토토 적중 결과Prof. Ping Sheng (Hong Kong University)
♦Place : Physics Seminar Room (Science Bldg, 3-201)
♦Date & Time : July 3 (Fri), 15:00 ~ 16:00 pm
Abstract
It is probably not a well-known fact that up until recently, continuum hydrodynamics can not accurately
model immiscible flows at the nanoscale.스포츠 토토 적중 결과The problem is not with the스포츠 토토 적중 결과Navier-Stokes스포츠 토토 적중 결과equation,스포츠 토토 적중 결과which
must be true, but lies in the hydrodynamic boundary condition, which for스포츠 토토 적중 결과the스포츠 토토 적중 결과past스포츠 토토 적중 결과century스포츠 토토 적중 결과has스포츠 토토 적중 결과been
held to be no-slip at the fluid-solid interface.스포츠 토토 적중 결과In this talk, the history스포츠 토토 적중 결과of스포츠 토토 적중 결과the스포츠 토토 적중 결과hydrodynamic스포츠 토토 적중 결과boundary
condition and its associated classic problem of moving contact line will be introduced in스포츠 토토 적중 결과some스포츠 토토 적중 결과detail.
Here the contact line denotes the intersection of the immiscible fluid-fluid interface with the solid wall,
and when one fluid displaces the other, the contact line moves along스포츠 토토 적중 결과the스포츠 토토 적중 결과solid스포츠 토토 적중 결과wall.스포츠 토토 적중 결과 Almost스포츠 토토 적중 결과half스포츠 토토 적중 결과a
century ago it was already recognized that the moving contact line will lead to infinite viscous dissipation
if one uses the no-slip hydrodynamic boundary condition.스포츠 토토 적중 결과We show that by using the Onsager variational
principle, which can be easily derived from basic statistical mechanic principles, one can simultaneously
derive the Navier-Stokes equation스포츠 토토 적중 결과and스포츠 토토 적중 결과its스포츠 토토 적중 결과related스포츠 토토 적중 결과boundary스포츠 토토 적중 결과conditions스포츠 토토 적중 결과at스포츠 토토 적중 결과the스포츠 토토 적중 결과fluid-solid스포츠 토토 적중 결과interface.
The resulting continuum hydrodynamic system, with the revised hydrodynamic스포츠 토토 적중 결과boundary스포츠 토토 적중 결과conditions,스포츠 토토 적중 결과is
shown for the first time to quantitatively reproduce molecular dynamic simulation results at the nanoscale.
Implications of this result for nanoscale hydrodynamics, together with its complementary relation to스포츠 토토 적중 결과the
kinetic theory of fluids, will be shown by short movies as well as discussed.
Contact Person : Prof. Wokyung Sung(054-279-2061, wsung@postech.ac.kr)
"
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