%0 Journal Article
%T Neyman-Scott-based water distribution network modelling Modelaci車n de redes de agua potable basado en el proceso de Neyman-Scott
%A Alcocer Yamanaka Victor Hugo
%A Tzatchkov Velitchko G.
%J Ingenier赤a e Investigaci車n
%D 2012
%I Universidad Nacional de Colombia
%X Residential water demand is one of the most difficult parameters to determine when modelling drinking water distribution networks. It has been proven to be a stochastic process which can be characterised as a series of rectangular pulses having set intensity, duration and frequency. Such parameters can be determined using stochastic models such as the Neyman-Scott rectangular pulse model (NSRPM). NSRPM is based on resolving a non-linear optimisation problem involving theoretical moments of the synthetic demand series (equiprobable) and of the observed moments (field measurements) statistically establishing the measured demand series. NSRPM has been applied to generating local residential demand. However, this model has not been validated for a real distribution network with residential demand aggregation, or compared to traditional methods (which is dealt with here). This paper compares the results of synthetic stochastic demand series (calculated using NSRPM applied to determining pressure and flow rate) to results obtained using traditional simulation methods using the curve of hourly variation in demand and to actual pressure and flow rate measurements. The Humaya sector of Culiacan, Sinaloa, Mexico, was used as study area. Uno de los par芍metros m芍s dif赤ciles de estimar al modelar las redes de distribuci車n de agua potable es el del consumo dom谷stico. Se ha demostrado que este sigue un proceso estoc芍stico posible de caracterizar a trav谷s de pulsos rectangulares, con ciertas intensidad, duraci車n y frecuencia de arribo, por medio de esquemas estoc芍sticos como el modelo de pulsos rectangulares de Neyman-Scott (Neyman-Scott Rectangular Pulses Model, NSRPM. El esquema NSRPM se basa en la soluci車n de un problema de optimizaci車n no lineal que involucra momentos te車ricos de las series sint谷ticas (equiprobables) y los momentos observados (mediciones de campo). Se ha publicado la metodolog赤a, as赤 como trabajos orientados a la generaci車n de la demanda en los domicilios, sin embargo no su validaci車n en una red de distribuci車n real, con la conjunci車n y agregaci車n de las demandas de los domicilios, y su comparaci車n con los m谷todos tradicionales. En el presente art赤culo se comparan resultados obtenidos empleando series sint谷ticas con car芍cter estoc芍stico, producto del esquema NSRPM aplicado a la determinaci車n de presiones y caudales, con los obtenidos por el m谷todo tradicional que utiliza curva de variaci車n horaria de la demanda, y con mediciones de presi車n y caudal hechas en el sector Humaya, en Culiac芍n, Sinaloa, M谷xico.
%K Residential water demand
%K network modeling
%K Neyman-Scott
%K Rectangular Pulse (NSRP) model
%U http://www.revistas.unal.edu.co/index.php/ingeinv/article/view/35937