Experimental dataset of head–discharge relationships in sediment-affected sharp-crested weirs using Effective Weir Height
Description
This dataset contains experimental measurements of head (h) and discharge (Q) obtained from laboratory tests conducted on rectangular sharp-crested weirs under fixed-bed sedimentation conditions. The dataset includes different combinations of weir height (P) and sediment thickness (Z), from which the Effective Weir Height (Pe) is defined as Pe = P − Z. The main hypothesis of the associated study is that Pe can act as an integrative hydraulic parameter that captures the combined influence of weir geometry and upstream sediment accumulation, allowing a unified representation of the head–discharge relationship. The data show that, for equivalent Pe values, the relationship between head (h) and discharge (Q) remains consistent across different geometric configurations, supporting the use of Pe as a scaling parameter. The dataset contains processed experimental values that can be used to reproduce the analysis, evaluate discharge coefficients, and support further hydraulic or numerical modeling of sediment-affected weirs. All variables are expressed in SI units.
Files
Steps to reproduce
Experiments were conducted in a laboratory hydrodynamic channel using rectangular sharp-crested weirs with different crest heights (P) and controlled upstream sediment thicknesses (Z). Sediment layers were placed upstream of the weir in increments until reaching different Pe conditions (Pe = P − Z). Flow was supplied using a controlled pumping system, and steady flow conditions were ensured before data acquisition. Water depth (h) and discharge (Q) were measured using an Acoustic Doppler Velocimeter (ADV) positioned upstream of the weir. Measurements were recorded at regular time intervals. Raw data were processed by removing transitional flow conditions and applying an interquartile range (IQR) method to eliminate outliers. Mean values of h and Q were computed for each experimental condition and are provided in this dataset. The dataset can be used to reproduce head–discharge relationships and evaluate discharge coefficients under sediment-affected conditions using the Effective Weir Height (Pe).
Institutions
- Universidad ContinentalJunin, Huancayo