add new mixed VC preprint

_bibliography/preprints.bib

@@ -1,3 +1,13 @@
+@misc{howland_turbulent_2024,
+  title = {Turbulent Mixed Convection in Vertical and Horizontal Channels},
+  author = {Howland, Christopher J. and Yerragolam, Guru Sreevanshu and Verzicco, Roberto and Lohse, Detlef},
+  year = {2024},
+  month = mar,
+  arxiv = {2403.07533},
+  abstract = {Turbulent shear flows driven by a combination of a pressure gradient and buoyancy forcing are investigated using direct numerical simulations. Specifically, we consider the setup of a differentially heated vertical channel subject to a Poiseuille-like horizontal pressure gradient. We explore the response of the system to its three control parameters: the Grashof number \(Gr\), the Prandtl number \(Pr\), and the Reynolds number \(Re\)\ of the pressure-driven flow. From these input parameters, the relative strength of buoyancy driving to the pressure gradient can be quantified by the Richardson number \(Ri=Gr/Re^2\). We compare the response of the mixed vertical convection configuration to that of mixed Rayleigh-Bénard convection and find a nearly identical behaviour, including an increase in wall friction at higher \(Gr\)\ and a drop in the heat flux relative to natural convection for \(Ri=O(1)\). This closely matched response is despite vastly different flow structures in the systems. No large-scale organisation is visible in visualisations of mixed vertical convection - an observation that is quantitatively confirmed by spectral analysis. This analysis, combined with a statistical description of the wall heat flux, highlights how moderate shear suppresses the growth of small-scale plumes and reduces the likelihood of extreme events in the local wall heat flux. Vice versa, starting from a pure shear flow, the addition of thermal driving enhances the drag due to the emission of thermal plumes.},
+  bibtex_show = {True}
+}
+
 @misc{yerragolam_scaling_2024,
   title = {Scaling Relations for Heat and Momentum Transport in Sheared {{Rayleigh-B{\'e}nard}} Convection},
   author = {Yerragolam, Guru Sreevanshu and Howland, Christopher J. and Stevens, Richard J. A. M. and Verzicco, Roberto and Shishkina, Olga and Lohse, Detlef},
@@ -8,7 +18,7 @@ @misc{yerragolam_scaling_2024
   bibtex_show = {true}
 }
 
-@misc{de_paoli_convective_2023-1,
+@misc{de_paoli_convective_2023,
   title = {Convective Dissolution in Confined Porous Media},
   author = {De Paoli, Marco and Howland, Christopher J. and Verzicco, Roberto and Lohse, Detlef},
   year = {2023},