TN-01_AdvancedQuantificationUncertaintiesInFusionModellingAtExascaleModelOrderReductio
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.. meta::
   :description: technical note

   :keywords: Advanced,Quantification,of,Uncertainties,In,Fusion,modelling,at,the,Exascale,with,model,order,Reduction,(AQUIFER),1,December,2021,–,14,March,2024,T/AW085/21,Report,[Milestone,3],Serge,Guillas,University,College,London,10,March,2022,Note,that,many,activities,are,joint,with,the,EPSRC,SEAVEA,project,due,to,synergies,and,cost,efficiencies,(e.g.,PI,time,,events,,HPC,access,to,ARCHER2,in,SEAVEA),as,mentioned,in,the,AQUIFER,project,description.,A,PhD,student,will,start,in,April,(Rob,Akers,and,James,Buchanan,from,UKAEA,participated,in,the,seection,panel,on,4,February,2022),and,a,permanent,research,data,scientist,is,in,the,process,of,being,recruited,(45%,FTE,total,over,27.5,months,on,AQUIFER,,and,in,the,new,UCL,Centre,for,Advanced,Research,Computing,(ARC)),with,interviews,taking,place,on,11,March,2022.,Our,project,was,affected,by,Covid-19,due,to,the,PI,and,others,getting,ill,within,the,funding,period.,Activity,No,1,Objective,1:,To,explain,and,disseminate,the,findings,Meetings,with,UKAEA,have,taken,place,in,three,formats:,•,NEPTUNE,Progress,Meetings,•,SEAVEA,Fusion,Use,Case,Meeting,3,March,2022:,this,allowed,for,instance,steps,for,the,•,choice,of,Nektar++,and,the,use,of,observations.,10,March,2022:,Meeting,with,the,control,,Data,Assimilation,and,Digital,Twinning,group,(Roger,Powell,,Tom,Deighan,,Mihai,Hrecinuc),Objective,2:,To,assist,the,NEPTUNE,community,with,the,implementation,of,UQ,James,Buchanan,and,Ander,Gray,are,now,added,to,SEAVEA,WP1,Meetings,(fortnightly),•,•,Roger,Powell,,Tom,Deighan,,Mihai,Hrecinuc,will,iterate,with,the,RADDISH,and,AQUIFER,group,on,Julia-based,Data,Assimilation,(Particle,Filter,and,Kalman,filtering).,Activity,No,2,(Start:,1,April,2022),Objective,1:,To,provide,surrogates,models,tailored,to,the,need,of,the,NEPTUNE,community,Preliminary,steps,include,integration,of,Turing,MOGP,and,SEAVEA,toolkits.,Objective,2:,To,calibrate,fusion,modelling,against,past,observations,Preliminary,steps,have,taken,place.,The,best,steps,are,to,calibrate,NEKTAR++,convection,against,observations.,These,observations,will,become,available,through,an,imaging,system,from,the,University,of,Leeds,within,a,couple,of,months.,NEKTAR++,is,now,run,in,2D,first,on,ARCHER2,,then,in,3D,to,adapt,methods,to,that,scale.,Objective,3:,To,assimilate,real-time,observations,into,fusion,modelling,Roger,Powell,,Tom,Deighan,,Mihai,Hrecinuc,will,iterate,with,the,RADDISH,and,AQUIFER,group,on,Julia-based,Data,Assimilation,(Particle,Filter,and,Kalman,filtering).,We,will,benefit,from,the,facility,CHIMERA,in,Yorkshire,to,get,real-time,data.,Activity,No,3,Objective,1:,implementation,of,the,advanced,surrogate,modelling,and,DA,methods,in,activity,2,within,SEAVEA,This,will,follow,activity,2.,Initial,releases,of,the,SEAVEA,toolkit,featuring,advanced,surrogate,modelling,(e.g.,active,subspace),are,in,progress.,Objective,2:,Coupling,between,SEAVEA,and,fully-resolved,models,using,MUSCLE3,In,progress.,Objective,3:,Integration,of,DA,and,UQ,platforms,This,will,follow,activity,2.,Not,started.,Activity,No,4,Objective,1:,Deployment,of,the,UQ,software,platform,on,ARCHER2,for,use,by,individual,teams,in,NEPTUNE,In,progress,,with,ARCHER2,now,being,utilised,for,Nektar++,2D,runs,and,UQ,by,Kevin,Bronik.,Objective,2:,Deployment,of,the,DA,software,platform,on,ARCHER2,for,use,by,individual,teams,in,NEPTUNE,Not,started.,Objective,3:,Deployment,of,the,UQ,and,DA,software,platforms,on,ARCHER2,for,use,for,the,integrated,fusion,model,by,all,teams,in,NEPTUNE,Not,started

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