Garuda - Garba Rujukan Digital

Model Laboratorium Pola Aliran Pada Krib Impermeable Terhadap Variasi Debit Dan Posisi Krib Di Sungai Berbelok Hasibuan, Bangun Sugito Riski; Mudjiatko, Mudjiatko; Rinaldi, Rinaldi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Crib is building cross river that serves as building steering flow to protect riverbanks from attacks the current flows. Model laboratory used to demonstrate the phenomenon of pattern flows that occur around the crib at the maender. Crib models used in this study is crib type impermeable with dimensions of length 0.15 m, width 0.03 m and high 0.15 m. The flow rate used is 0.00134 m3 / sec (Q1), 0.00298 m3 / sec (Q2) and 0.0056 m3 / sec (Q3). Position crib used is 0 ° (S1), 15 ° (S2) and 30 ° (S3) to turn the corner. Distance between crib is 30 cm and the configuration crib angle of 135 ° tothe wall outside of the turn. The pattern flows at each position variation crib with debit Q1, vortex flow occurs in the space between the crib and crib with a radius lengthy of the vortexis relatively short. The pattern flows at each position variation crib with debit Q2, vortex flow occurs around the crib witha radius lengthy of the vortex is relatively modest. The pattern flows at each position variation crib with debit Q3, vortex flow occurs before at the crib, a space between the crib and crib with a radius lengthy of the vortexrelatively long. Overall,phenomenon the pattern flow of the most well occur indebit Q1 position crib S2.Keywords: patterns of flow, maender, crib type of impermeable

Fenomena Hidrolis Pada Pintu Sorong Fahmiahsan, Rosyadah; Mudjiatko, Mudjiatko; Rinaldi, Rinaldi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

The sluice gate is a hydraulic structure that used for controlling the discharge on dam or irrigation canal. Their discharge coefficient depends on geometric and hydraulic parameters. Swamee (1992) presents two formulas for calculating the discharge coefficient (Cd) for free flow and submerged flow based on Henry’s Curve (1950). Laboratory models used to find out the flow phenomenon that was formed due to a difference in the edge shape of the sluice gate and increased gate base. The simulation done by varying the height of the gate opening (a) and the discharge (Q). The results of the study obtained the length of water jumps (Lj) formed on the sluice gate with edge 450 is longer than the sluice gate with edge 900. The discharge coefficient (Cd) value on the sluice gate with edge 450 is higher than the discharge coefficient (Cd) value on the gate with edge 900. The energy loss trendline (ΔE) obtained shows the value of ΔE increases with increasing h2/h1. The value of the critical flow coefficient range (Ckr) on the sluice gate with edge 450 and 900 increases with the increase in base height. The results of this study also add to the long trendline of previous research that has been done by Klaas (2009).Keywords: Discharge Coefficient, Energy Loss, Hydraulic Jump, Sluice Gate

Kajian Optimalisasi Lahan Pertanian Pada Daerah Irigasi Sungai Paku Kecamatan Kampar Kiri Kabupaten Kampar Karnanda, Eka Jevri; Mudjiatko, Mudjiatko; Siswanto, Siswanto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Changing at land used in Sei Paku Irrigation area caused the change of potential land from Â± 1132 hectares to Â± 373 hectares . This resulted in the failure of the rice granary program by the Riau provincial government., Resulting in declining agricultural productivity and incomeof the farmer community. Simulations done using linear programming optimization model with the help of SolverLinear Programming to get the value of the biggest advantages of multiple cropping patterns are applied.Thecropping pattern which gave benefit for the optimization is the 8th alternative ( Palawija/Fishpond -Palawija/Fishpond - Palawija/Fishpond). Replenishing water started at2ndperiod of December, in the area for crop season I: 0 hectares for Palawija and 493.09 hectares for Fishpond. Crop season II:0 hectares for Palawija and 314.74 hectares for Fishpond. Crop season III:0 hectares for Palawija and 542.90 hectares for Fishpond with benefit every year wasRp 25,659,599,866.55. However, the cropping pattern was not in accordance with thecropping patternplanned for agriculture. Therefore, the researcher chose the 1st whizh was Rice - Rice - Rice The pattern with planting started at 2nd period of February, inthe area for 1stplanting season was 457.41 hectares, 2ndplanting season was 325.05 hectares, 3rd planting season was 680, 01 Ha. The total of benefit gained every year was IDR 22,814,536,868.18.Keywords: Cropping pattern, optimize, linear Program

Simulasi Pola Aliran Pada Bendung Uwai Bangkinang Seberang Kabupaten Kampar Wahyudi, Rioza; Sujatmoko, Bambang; Mudjiatko, Mudjiatko
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Uwai weir which was built on 1938 is located on Bangkinang Seberang, Kampar District. As a result of river containment an inundation area called Embung was formed naturally with nonuniform topography. The distribution of flow velocity is not uniform and causing various flow pattern for every point on Embung Uwai.Flow pattern simulation which is used is qualitative and quantitative. Quantitative simulation based on velocity contour which was generated is divided into return period of 2, 5, and 10 years and by comparing the relation between velocity contour and water depth. Qualitative simulation was observed on water swirl and the flow that occured. The flow pattern generated fom simulation on return period of 2, 5 and 10 years didn’t show any significant different. Flow velocity distribution was compared based on return period of 2, 5, and 10 years. Results obtained was that the highest flow velocity is on section 3 with 0.07 m/s for return period of 2 years, 0.078 m/s for return period of 5 years and 0.08 m/s for return period of 10 years.Keywords : Weir, flow pattern, simulation

Model Laboratorium Pola Aliran Pada Krib Permeable Terhadap Variasi Jarak Antar Krib Dan Debit Alirandi Sungai Berbelok Zikri, Ahmad; Mudjiatko, Mudjiatko; Rinaldi, Rinaldi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Crib is a structure that used to adjust the direction of flow of the river to protect riverbanks from direct flow. Laboratory model used to demonstrate the phenomenon of flow patterns that occur in the riverâ€™s turn around the crib. Crib models that will be used in this study is a crib with a permeable type with dimensions 0.15 m length, 0.03 m width and 0.15 m height. Materials to be used in permeable crib is a plain iron with 10 mm diameter. The variable in this study is flow rate and distance between the crib. The flow rate varies 0.00134 mÂ³/sec, 0.00298 mÂ³/sec and 0.0056 mÂ³/sec. The distance between crib varies between 30 cm, 40 cm and 50 cm from the beginning of the turn of the river entrance. The flow velocity that occurs around the crib shrink in every variety test. The flow patterns on every variation of the distance between crib with 0.00134 mÂ³/sec of flow rate, the vortex of flow occurs in the early part of the crib. The flow patterns on every variation of the distance between crib with 0.00298 mÂ³/sec of flow rate, the vortex of flow occurs in the early part of the crib. The flow patterns on every variation of the distance between crib with 0.0056 mÂ³/sec of flow rate, the vortex of flow occurs on the side of the crib end. The length of the vortex occurs differently in each variation of the distance between crib at 30 cm, the length of the vortex is relatively short. At a distance of 40 cm, the length of the vortex is relatively long and at a distance of 50 cm, the length of the vortex is quite long.Key word : flow pattern, riverâ€™s turn, permeable crib

Analisis Pola Aliran Dan Pola Sedimentasi Pada Waduk Sei Paku Kecamatan Kampar Kiri Kabupaten Kampar Freester, Joy; Mudjiatko, Mudjiatko; Sujatmoko, Bambang
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

The non-uniformity topography of Sei Paku Reservoir caused non-uniform flow in the reservoir, forming unique flow pattern. This flow pattern caused the uneven of flow velocity distribution and sediment distribution in the reservoir. The uneven of flow velocity distribution and sediment distribution can affect the trend of bed configuration changes of the reservoir. It takes a form of a simulation study to determine the pattern and flow velocity distribution, and sediment distribution in the reservoir. In the simulation, topography data, flood discharge, and the water level are processed by RMA-2 that produces flow patterns and the flow velocity. Parameters such as sediment grain size and sediment concentrations are processed by SED2D that produces sediment distribution. The simulation results showed that the flow patterns affect the flow velocity distribution and the sediment distribution in the reservoir so that happen bed configuration changes of the reservoir. The bed configuration of Sei Paku reservoir classified by simulation results in “Anti Dunes” phase where upstream side suffered deposition while downstream side suffered erosion.Keyword: Simulation, flow pattern, sedimentation

Title

Found 6 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 6 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 6 Documents
Search