作为探索性研究，非恒定流模型是可行的，有发展潜力的。
As an exploratory research, unsteady flow model is feasible and potential.
在恒定流计算过程中采用动能标准比最大水位修正和剩余质量标准更能有效地判别模型的稳定性。
The kinetic energy criterion more effectively represents the model stability in steady flow simulations than the maximum water level variations or the residual mass criterion.
用非恒定流数学模型对系统的输水管道、配水管道、调节池进行分析。
Conveyer and service pipes and regulating pond of the system was analyzed through unsteady mathematic model.
在液体管道瞬变流计算中，传统的拟恒定摩阻模型不能准确描述瞬变流的真实物理现象。
The traditional quasi - steady friction model can not be accurately described the real transient problems in transient pipe flow.
根据广东省台山市都斛镇灌排河网的特点，建立了河网非恒定出流数学模型。
Based on specific characteristics of river network in Duhu town of Taishan city, Guangdongprovince, a unsteady outflow model is established.
在液体管道瞬变流计算中，传统的拟恒定摩阻模型不能准确描述瞬变流的真实物理现象。
The traditional quasi-steady friction models are proved to be inaccurate in transient pipe flow because they underestimate friction losses in transients.
建立系统非恒定流数学模型。
Unsteay flow mathematic model of the system was established.
从二维浅水非恒定流的控制方程出发，建立了一个二维湖泊流体动力学模型。
Based on the two-dimension adlittoral non-invariablenes flow control equation of lakes, a hydrodynamic model of lakes was built up.
为了评价地下水水流条件的变化对放射性核素迁移行为的影响，该文以双重介质理论的裂隙迁移模型为基础，提出了非恒定流条件下单裂隙核素迁移模。
To assess how such changes may affect the nuclide transport behavior, the paper proposes a single fracture nuclide transport model under time-varying groundwater flow conditions based on t.
提出船闸引航道内水面波动的二维数学模型，采用二维非恒定流数学模型和船闸灌泄水一维数学模型联解。
A 2-d numerical model of wave motion in lock approach channel is described, which is soluted by using the method of resultants of 2-d numerical model of unsteady flow and 1-d numerical model.
提出船闸引航道内水面波动的二维数学模型，采用二维非恒定流数学模型和船闸灌泄水一维数学模型联解。
A 2-d numerical model of wave motion in lock approach channel is described, which is soluted by using the method of resultants of 2-d numerical model of unsteady flow and 1-d numerical model.
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