TY - CONF
T1 - Liquid falling films: linear stability and direct numerical simulation
AU - Schmidt, Patrick
AU - O'Naraigh, Lennon
AU - Valluri, Prashant
AU - Lucquiaud, Mathieu
N1 - APS Division of Fluid Dynamics (Fall) 2013, abstract #L9.005
PY - 2013/11/1
Y1 - 2013/11/1
N2 - Interfacial instability of falling liquid films in counter-current
contact with a turbulent gas phase is investigated by means of an
Orr-Sommerfeld analysis. This study is complemented by a full energy
budget analysis, identifying the key mechanisms of the instability. This
gives first insight into the dynamic behaviour of the two-phase system,
which is relevant for a wide range of technical applications, such as
absorption and distillation. The linear stability analysis is also used
to identify the operating limits of a counter-current operation i.e. the
so-called loading and flooding limits. In addition, the results of this
analysis are benchmark for direct numerical simulations using the newly
launched Two-Phase Level Set (http://sourceforge.net/projects/tpls/)
solver. High resolution DNS is used to obtain detailed knowledge of
important mechanisms at play, especially with regard to interfacial
instability and transient system behaviour, which can help to design
more efficient mass transfer equipment such as structured packings.
Interfacial instability of falling liquid films in counter-current
contact with a turbulent gas phase is investigated by means of an
Orr-Sommerfeld analysis. This study is complemented by a full energy
budget analysis, identifying the key mechanisms of the instability. This
gives first insight into the dynamic behaviour of the two-phase system,
which is relevant for a wide range of technical applications, such as
absorption and distillation. The linear stability analysis is also used
to identify the operating limits of a counter-current operation i.e. the
so-called loading and flooding limits. In addition, the results of this
analysis are benchmark for direct numerical simulations using the newly
launched Two-Phase Level Set (http://sourceforge.net/projects/tpls/)
solver. High resolution DNS is used to obtain detailed knowledge of
important mechanisms at play, especially with regard to interfacial
instability and transient system behaviour, which can help to design
more efficient mass transfer equipment such as structured packings.
Sulzer Chemtech Ltd, EPSRC, Energy Technology Partnership.
AB - Interfacial instability of falling liquid films in counter-current
contact with a turbulent gas phase is investigated by means of an
Orr-Sommerfeld analysis. This study is complemented by a full energy
budget analysis, identifying the key mechanisms of the instability. This
gives first insight into the dynamic behaviour of the two-phase system,
which is relevant for a wide range of technical applications, such as
absorption and distillation. The linear stability analysis is also used
to identify the operating limits of a counter-current operation i.e. the
so-called loading and flooding limits. In addition, the results of this
analysis are benchmark for direct numerical simulations using the newly
launched Two-Phase Level Set (http://sourceforge.net/projects/tpls/)
solver. High resolution DNS is used to obtain detailed knowledge of
important mechanisms at play, especially with regard to interfacial
instability and transient system behaviour, which can help to design
more efficient mass transfer equipment such as structured packings.
Interfacial instability of falling liquid films in counter-current
contact with a turbulent gas phase is investigated by means of an
Orr-Sommerfeld analysis. This study is complemented by a full energy
budget analysis, identifying the key mechanisms of the instability. This
gives first insight into the dynamic behaviour of the two-phase system,
which is relevant for a wide range of technical applications, such as
absorption and distillation. The linear stability analysis is also used
to identify the operating limits of a counter-current operation i.e. the
so-called loading and flooding limits. In addition, the results of this
analysis are benchmark for direct numerical simulations using the newly
launched Two-Phase Level Set (http://sourceforge.net/projects/tpls/)
solver. High resolution DNS is used to obtain detailed knowledge of
important mechanisms at play, especially with regard to interfacial
instability and transient system behaviour, which can help to design
more efficient mass transfer equipment such as structured packings.
Sulzer Chemtech Ltd, EPSRC, Energy Technology Partnership.
M3 - Paper
ER -