Answer / raja

flow inlet of the primary element called upstream,flow outlet of the primary element called down stream.

Answer / naveed iqbal butt

inlet of the primary flow element is called upstream where
pressure increase and volicity decrease,outlet of the
primary flow element is called down stream where volicity
increase and pressure decrease.

Answer / ahmed helmy

upstream means high pressure
downstream means low pressure
in liquid flow, the flow is directed in pipe from high pressure to low pressure

Answer / carl_ellis

Upstream is a higher pressure than downstream and
downstream is lower pressure than upstream, because it is a
difference in pressure that causes a liquid to flow.

Carl Ellis
Measure First

Answer / seshu

consider one orifice its inlet is upstream and its out let is call downstream.upstream have high pressure loe stream have low pressure.

Answer / mugil

flow level is going full ( high) in pipe line means that is
called upstream.
flow level is going low level in pipe line means that is
called down stream.

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