flow with outlet controlflow workflowageflowage lineflowing waterflowmeterfluctuating loadfluctuating stressfluctuationfluctuation of loadfluctuation of piezometric surfacefluctuation of water tableflueflue gasfluidfluid flowfluid linefluid mechanicsfluid netfluid propertyfluid resistancefluid staticsfluidityfluidizationflumefluming ratioflush boltflush doorflush jointflush kerbflush shoulderflush tankflush valveflush valve ballflushingflushing cisternflushing systemflushing waterfluteflutedflutterflutter instabilityfluvial depositfluvial erosionfluvial morphologyfluvial pointfluvio glacialfluxflux coredfluxing oil