Laserfiche WebLink
<br /> 181 <br />0 <br />,-:::> <br />tv <br />10 <br />...... <br />tv <br /> CHAPTER 6 <br /> <br />MODEL TESTING AND STABILITY OF SYSTEM RESPONSE <br /> <br />Several sets of simulations were made to determine information <br /> <br />necessary for subsequent studies and to examine the nature of the <br /> <br />system. For the purpose of obtaining stationary distributions for <br /> <br />system variables it was necessary to estimate the transient time re- <br /> <br />quired for system response to become independent of initial conditions. <br /> <br />Transients in system response result if initial conditions are atypical <br /> <br />of operating conditions. The number of years for which the system is <br /> <br />Additional trial simulations were made to determine the effects <br /> <br /> <br />observed, the simulation time, was also determined. To obtain meaning- <br /> <br />ful results it is necessary for the simulation time to be long enough <br /> <br />so that the stable or steady-state response of the system is reached; <br /> <br />in other words, further observation provides no new information regard- <br /> <br />ing system performance. <br /> <br />of modeling changes in bank storage. <br /> <br />6.1 Transient Time Determination <br /> <br />The time required to fill a reservoir under average inflow and <br /> <br />discharge conditions is one measure of the transient time of a single <br /> <br />reservoir system. For example, at the highest level of stream <br />