<html><head></head><body><div>Hi,</div><div><br></div><div>Is it possible to simulate a closed <span><span style="color: rgb(0, 0, 0); font-family: times new roman, new york, times, serif; font-size: 16px;">circuit</span></span> without having pump to circulate a fluid in the circuit using some valve options instead (For instance, setting mass flow rate as the input or parameter of some kind of valves) <span>? Please have a look at these two Figures to see whether the system on the right hand side is working practically or not. Thank you so much for your attention.</span></div><div><span><span style="color: rgb(0, 0, 0); font-family: times new roman, new york, times, serif; font-size: 16px;"><br></span></span></div><div><span><span style="color: rgb(0, 0, 0); font-family: times new roman, new york, times, serif; font-size: 16px;"><br></span></span></div><div><span><span style="color: rgb(0, 0, 0); font-family: times new roman, new york, times, serif; font-size: 16px;">Arian</span></span></div><div><span><span style="color: rgb(0, 0, 0); font-family: times new roman, new york, times, serif; font-size: 16px;"><br></span></span></div><div class="ydp28df74bcyahoo-style-wrap" style="font-family: times new roman, new york, times, serif; font-size: 16px;"></div></body></html>